Bug 1108488 – VUL-1: CVE-2018-9517: kernel-source: l2tp: pass tunnel pointer to ->session_create()

Bug 1108488 - (CVE-2018-9517) VUL-1: CVE-2018-9517: kernel-source: l2tp: pass tunnel pointer to ->session_create()

(CVE-2018-9517)
Summary:	VUL-1: CVE-2018-9517: kernel-source: l2tp: pass tunnel pointer to ->session_c...

Status:	IN_PROGRESS

Classification:	Novell Products
Product:	SUSE Security Incidents
Classification:	Novell Products
Component:	Incidents
Version:	unspecified
Hardware:	Other Other

Priority:	P4 - Low Severity: Minor
Target Milestone:	---
Assigned To:	Security Team bot
QA Contact:	Security Team bot

URL:	https://smash.suse.de/issue/214767/
Whiteboard:	CVSSv3:SUSE:CVE-2018-9517:2.5:(AV:L/...
Keywords:

Depends on:
Blocks:
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Reported:	2018-09-14 13:53 UTC by Alexander Bergmann
Modified:	2023-03-21 08:43 UTC (History)
CC List:	14 users (show)

See Also:
Found By:	Security Response Team
Services Priority:
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Blocker:	---
Marketing QA Status:	---
IT Deployment:	---

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Description Alexander Bergmann 2018-09-14 13:53:00 UTC

CVE-2018-9517

l2tp: pass tunnel pointer to ->session_create()
Using l2tp_tunnel_find() in pppol2tp_session_create() and
l2tp_eth_create() is racy, because no reference is held on the
returned session. These functions are only used to implement the
->session_create callback which is run by l2tp_nl_cmd_session_create().
Therefore searching for the parent tunnel isn't necessary because
l2tp_nl_cmd_session_create() already has a pointer to it and holds a
reference.

This patch modifies ->session_create()'s prototype to directly pass the
the parent tunnel as parameter, thus avoiding searching for it in
pppol2tp_session_create() and l2tp_eth_create().

Since we have to touch the ->session_create() call in
l2tp_nl_cmd_session_create(), let's also remove the useless conditional:
we know that ->session_create isn't NULL at this point because it's
already been checked earlier in this same function.

Finally, one might be tempted to think that the removed
l2tp_tunnel_find() calls were harmless because they would return the
same tunnel as the one held by l2tp_nl_cmd_session_create() anyway.
But that tunnel might be removed and a new one created with same tunnel
Id before the l2tp_tunnel_find() call. In this case l2tp_tunnel_find()
would return the new tunnel which wouldn't be protected by the
reference held by l2tp_nl_cmd_session_create().

Fixes: 309795f4bec2 ("l2tp: Add netlink control API for L2TP")
Fixes: d9e31d17ceba ("l2tp: Add L2TP ethernet pseudowire support")
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>


References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-9517
http://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-9517.html
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f026bc29a8e093edfbb2a77700454b285c97e8ad

Comment 1 Takashi Iwai 2018-09-14 15:23:51 UTC

The fix is already in SLE15 branch, but seems not in the older branches.

Comment 2 Michal Kubeček 2018-09-20 11:41:49 UTC

It was brought to my attention by git-fixes but I didn't want to backport it
to older branches as it breaks kABI.

On the other hand, it seems unlikely that any out of tree module would use
struct l2tp_nl_cmd_ops so simply blacklisting it might be sufficient. I'll
take a closer look.

Comment 3 Michal Hocko 2019-11-06 12:39:11 UTC

(In reply to Michal Kubeček from comment #2)
> It was brought to my attention by git-fixes but I didn't want to backport it
> to older branches as it breaks kABI.
> 
> On the other hand, it seems unlikely that any out of tree module would use
> struct l2tp_nl_cmd_ops so simply blacklisting it might be sufficient. I'll
> take a closer look.

Are there any plans to get this to appropriate cve branches?

Comment 4 Marcus Meissner 2021-06-07 11:38:04 UTC

Michal? Can you pick this up again?

Comment 5 Otto Hollmann 2021-06-16 15:22:41 UTC

(In reply to Takashi Iwai from comment #1)
> The fix is already in SLE15 branch, but seems not in the older branches.

FTR: Patch for this CVE should be already in SLE12-SP4 and later - see bug bsc#1076830, but this CVE number is not mentioned in change log. And if I'm not mistaken, it's also in branch cve/linux-4.12.

Comment 14 Swamp Workflow Management 2021-09-22 19:24:49 UTC

SUSE-SU-2021:3192-1: An update that solves 13 vulnerabilities and has 39 fixes is now available.

Category: security (important)
Bug References: 1040364,1108488,1114648,1127650,1129898,1133374,1183050,1183983,1185902,1185973,1187076,1188000,1188172,1188439,1188616,1188885,1188982,1189057,1189262,1189268,1189269,1189270,1189271,1189272,1189291,1189301,1189384,1189385,1189392,1189399,1189400,1189505,1189506,1189562,1189564,1189565,1189566,1189567,1189568,1189569,1189573,1189577,1189579,1189581,1189582,1189639,1189640,1189706,1189846,1190025,1190115,1190117
CVE References: CVE-2018-9517,CVE-2019-3874,CVE-2019-3900,CVE-2021-3640,CVE-2021-3653,CVE-2021-3656,CVE-2021-3679,CVE-2021-3732,CVE-2021-3753,CVE-2021-3759,CVE-2021-38160,CVE-2021-38198,CVE-2021-38204
JIRA References: 
Sources used:
SUSE Linux Enterprise Server 12-SP5 (src):    kernel-azure-4.12.14-16.73.2, kernel-source-azure-4.12.14-16.73.1, kernel-syms-azure-4.12.14-16.73.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 15 Swamp Workflow Management 2021-09-23 19:19:19 UTC

SUSE-SU-2021:3206-1: An update that solves 16 vulnerabilities and has 40 fixes is now available.

Category: security (important)
Bug References: 1040364,1108488,1114648,1127650,1129898,1133374,1136513,1171420,1183050,1183983,1185902,1185973,1187076,1188172,1188439,1188616,1188885,1188982,1188983,1188985,1189057,1189262,1189268,1189269,1189270,1189271,1189272,1189291,1189301,1189384,1189385,1189392,1189399,1189400,1189505,1189506,1189562,1189564,1189565,1189566,1189567,1189568,1189569,1189573,1189577,1189579,1189581,1189582,1189639,1189640,1189706,1189846,1190022,1190025,1190115,1190117
CVE References: CVE-2018-9517,CVE-2019-3874,CVE-2019-3900,CVE-2020-12770,CVE-2021-34556,CVE-2021-35477,CVE-2021-3640,CVE-2021-3653,CVE-2021-3656,CVE-2021-3679,CVE-2021-3732,CVE-2021-3753,CVE-2021-3759,CVE-2021-38160,CVE-2021-38198,CVE-2021-38204
JIRA References: 
Sources used:
SUSE Linux Enterprise Workstation Extension 12-SP5 (src):    kernel-default-4.12.14-122.88.1
SUSE Linux Enterprise Software Development Kit 12-SP5 (src):    kernel-docs-4.12.14-122.88.1, kernel-obs-build-4.12.14-122.88.2
SUSE Linux Enterprise Server 12-SP5 (src):    kernel-default-4.12.14-122.88.1, kernel-source-4.12.14-122.88.1, kernel-syms-4.12.14-122.88.1
SUSE Linux Enterprise Live Patching 12-SP5 (src):    kernel-default-4.12.14-122.88.1, kgraft-patch-SLE12-SP5_Update_23-1-8.5.1
SUSE Linux Enterprise High Availability 12-SP5 (src):    kernel-default-4.12.14-122.88.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 16 Swamp Workflow Management 2021-09-23 19:33:56 UTC

SUSE-SU-2021:3217-1: An update that solves 16 vulnerabilities and has 40 fixes is now available.

Category: security (important)
Bug References: 1040364,1108488,1114648,1127650,1129898,1133374,1136513,1171420,1183050,1183983,1185902,1185973,1187076,1188172,1188439,1188616,1188885,1188982,1188983,1188985,1189057,1189262,1189268,1189269,1189270,1189271,1189272,1189291,1189301,1189384,1189385,1189392,1189399,1189400,1189505,1189506,1189562,1189564,1189565,1189566,1189567,1189568,1189569,1189573,1189577,1189579,1189581,1189582,1189639,1189640,1189706,1189846,1190022,1190025,1190115,1190117
CVE References: CVE-2018-9517,CVE-2019-3874,CVE-2019-3900,CVE-2020-12770,CVE-2021-34556,CVE-2021-35477,CVE-2021-3640,CVE-2021-3653,CVE-2021-3656,CVE-2021-3679,CVE-2021-3732,CVE-2021-3753,CVE-2021-3759,CVE-2021-38160,CVE-2021-38198,CVE-2021-38204
JIRA References: 
Sources used:
SUSE Linux Enterprise Real Time Extension 12-SP5 (src):    kernel-rt-4.12.14-10.57.2, kernel-rt_debug-4.12.14-10.57.2, kernel-source-rt-4.12.14-10.57.1, kernel-syms-rt-4.12.14-10.57.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 25 Swamp Workflow Management 2021-12-02 11:20:00 UTC

openSUSE-SU-2021:3876-1: An update that solves 43 vulnerabilities, contains one feature and has 26 fixes is now available.

Category: security (important)
Bug References: 1100416,1108488,1129735,1129898,1133374,1136513,1171420,1176724,1177666,1181158,1184673,1184804,1185377,1185726,1185758,1185973,1186078,1186109,1186390,1186482,1186672,1188062,1188063,1188172,1188563,1188601,1188616,1188838,1188876,1188983,1188985,1189057,1189262,1189291,1189399,1189400,1189706,1189846,1189884,1190023,1190025,1190067,1190115,1190117,1190159,1190276,1190349,1190351,1190479,1190534,1190601,1190717,1191193,1191315,1191317,1191349,1191457,1191628,1191790,1191800,1191888,1191961,1192045,1192267,1192379,1192400,1192775,1192781,1192802
CVE References: CVE-2018-13405,CVE-2018-9517,CVE-2019-3874,CVE-2019-3900,CVE-2020-0429,CVE-2020-12770,CVE-2020-3702,CVE-2020-4788,CVE-2021-0941,CVE-2021-20322,CVE-2021-22543,CVE-2021-31916,CVE-2021-33033,CVE-2021-33909,CVE-2021-34556,CVE-2021-34981,CVE-2021-3542,CVE-2021-35477,CVE-2021-3640,CVE-2021-3653,CVE-2021-3655,CVE-2021-3656,CVE-2021-3659,CVE-2021-3679,CVE-2021-3715,CVE-2021-37159,CVE-2021-3732,CVE-2021-3744,CVE-2021-3752,CVE-2021-3753,CVE-2021-37576,CVE-2021-3759,CVE-2021-3760,CVE-2021-3764,CVE-2021-3772,CVE-2021-38160,CVE-2021-38198,CVE-2021-38204,CVE-2021-40490,CVE-2021-41864,CVE-2021-42008,CVE-2021-42252,CVE-2021-42739
JIRA References: SLE-22573
Sources used:
openSUSE Leap 15.3 (src):    kernel-debug-4.12.14-197.102.2, kernel-default-4.12.14-197.102.2, kernel-kvmsmall-4.12.14-197.102.2, kernel-vanilla-4.12.14-197.102.2, kernel-zfcpdump-4.12.14-197.102.2

Comment 26 Swamp Workflow Management 2021-12-02 11:32:18 UTC

SUSE-SU-2021:3876-1: An update that solves 43 vulnerabilities, contains one feature and has 26 fixes is now available.

Category: security (important)
Bug References: 1100416,1108488,1129735,1129898,1133374,1136513,1171420,1176724,1177666,1181158,1184673,1184804,1185377,1185726,1185758,1185973,1186078,1186109,1186390,1186482,1186672,1188062,1188063,1188172,1188563,1188601,1188616,1188838,1188876,1188983,1188985,1189057,1189262,1189291,1189399,1189400,1189706,1189846,1189884,1190023,1190025,1190067,1190115,1190117,1190159,1190276,1190349,1190351,1190479,1190534,1190601,1190717,1191193,1191315,1191317,1191349,1191457,1191628,1191790,1191800,1191888,1191961,1192045,1192267,1192379,1192400,1192775,1192781,1192802
CVE References: CVE-2018-13405,CVE-2018-9517,CVE-2019-3874,CVE-2019-3900,CVE-2020-0429,CVE-2020-12770,CVE-2020-3702,CVE-2020-4788,CVE-2021-0941,CVE-2021-20322,CVE-2021-22543,CVE-2021-31916,CVE-2021-33033,CVE-2021-33909,CVE-2021-34556,CVE-2021-34981,CVE-2021-3542,CVE-2021-35477,CVE-2021-3640,CVE-2021-3653,CVE-2021-3655,CVE-2021-3656,CVE-2021-3659,CVE-2021-3679,CVE-2021-3715,CVE-2021-37159,CVE-2021-3732,CVE-2021-3744,CVE-2021-3752,CVE-2021-3753,CVE-2021-37576,CVE-2021-3759,CVE-2021-3760,CVE-2021-3764,CVE-2021-3772,CVE-2021-38160,CVE-2021-38198,CVE-2021-38204,CVE-2021-40490,CVE-2021-41864,CVE-2021-42008,CVE-2021-42252,CVE-2021-42739
JIRA References: SLE-22573
Sources used:
SUSE Linux Enterprise Server for SAP 15-SP1 (src):    kernel-default-4.12.14-197.102.2, kernel-docs-4.12.14-197.102.2, kernel-obs-build-4.12.14-197.102.1, kernel-source-4.12.14-197.102.2, kernel-syms-4.12.14-197.102.2
SUSE Linux Enterprise Server 15-SP1-LTSS (src):    kernel-default-4.12.14-197.102.2, kernel-docs-4.12.14-197.102.2, kernel-obs-build-4.12.14-197.102.1, kernel-source-4.12.14-197.102.2, kernel-syms-4.12.14-197.102.2, kernel-zfcpdump-4.12.14-197.102.2
SUSE Linux Enterprise Server 15-SP1-BCL (src):    kernel-default-4.12.14-197.102.2, kernel-docs-4.12.14-197.102.2, kernel-obs-build-4.12.14-197.102.1, kernel-source-4.12.14-197.102.2, kernel-syms-4.12.14-197.102.2
SUSE Linux Enterprise Module for Live Patching 15-SP1 (src):    kernel-default-4.12.14-197.102.2, kernel-livepatch-SLE15-SP1_Update_27-1-3.3.1
SUSE Linux Enterprise High Performance Computing 15-SP1-LTSS (src):    kernel-default-4.12.14-197.102.2, kernel-docs-4.12.14-197.102.2, kernel-obs-build-4.12.14-197.102.1, kernel-source-4.12.14-197.102.2, kernel-syms-4.12.14-197.102.2
SUSE Linux Enterprise High Performance Computing 15-SP1-ESPOS (src):    kernel-default-4.12.14-197.102.2, kernel-docs-4.12.14-197.102.2, kernel-obs-build-4.12.14-197.102.1, kernel-source-4.12.14-197.102.2, kernel-syms-4.12.14-197.102.2
SUSE Linux Enterprise High Availability 15-SP1 (src):    kernel-default-4.12.14-197.102.2
SUSE Enterprise Storage 6 (src):    kernel-default-4.12.14-197.102.2, kernel-docs-4.12.14-197.102.2, kernel-obs-build-4.12.14-197.102.1, kernel-source-4.12.14-197.102.2, kernel-syms-4.12.14-197.102.2
SUSE CaaS Platform 4.0 (src):    kernel-default-4.12.14-197.102.2, kernel-docs-4.12.14-197.102.2, kernel-obs-build-4.12.14-197.102.1, kernel-source-4.12.14-197.102.2, kernel-syms-4.12.14-197.102.2

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 27 Swamp Workflow Management 2021-12-07 20:21:22 UTC

SUSE-SU-2021:3969-1: An update that solves 37 vulnerabilities and has 21 fixes is now available.

Category: security (important)
Bug References: 1085235,1085308,1087078,1087082,1100394,1102640,1105412,1108488,1129898,1133374,1171420,1173489,1174161,1181854,1184804,1185377,1185726,1185758,1186109,1186482,1188172,1188563,1188601,1188838,1188876,1188983,1188985,1189057,1189262,1189291,1189399,1189400,1189706,1189846,1189884,1190023,1190025,1190067,1190117,1190159,1190351,1190479,1190534,1190601,1190717,1191193,1191315,1191317,1191790,1191800,1191961,1192045,1192267,1192379,1192400,1192775,1192781,1192802
CVE References: CVE-2018-3639,CVE-2018-9517,CVE-2019-3874,CVE-2019-3900,CVE-2020-12770,CVE-2020-3702,CVE-2021-0941,CVE-2021-20320,CVE-2021-20322,CVE-2021-22543,CVE-2021-31916,CVE-2021-33033,CVE-2021-34556,CVE-2021-34981,CVE-2021-35477,CVE-2021-3640,CVE-2021-3653,CVE-2021-3655,CVE-2021-3656,CVE-2021-3659,CVE-2021-3679,CVE-2021-37159,CVE-2021-3732,CVE-2021-3744,CVE-2021-3752,CVE-2021-3753,CVE-2021-37576,CVE-2021-3760,CVE-2021-3764,CVE-2021-3772,CVE-2021-38160,CVE-2021-38198,CVE-2021-38204,CVE-2021-40490,CVE-2021-41864,CVE-2021-42008,CVE-2021-42252
JIRA References: 
Sources used:
SUSE Linux Enterprise Server for SAP 15 (src):    kernel-default-4.12.14-150.78.1, kernel-docs-4.12.14-150.78.2, kernel-obs-build-4.12.14-150.78.2, kernel-source-4.12.14-150.78.1, kernel-syms-4.12.14-150.78.1, kernel-vanilla-4.12.14-150.78.1
SUSE Linux Enterprise Server 15-LTSS (src):    kernel-default-4.12.14-150.78.1, kernel-docs-4.12.14-150.78.2, kernel-obs-build-4.12.14-150.78.2, kernel-source-4.12.14-150.78.1, kernel-syms-4.12.14-150.78.1, kernel-vanilla-4.12.14-150.78.1, kernel-zfcpdump-4.12.14-150.78.1
SUSE Linux Enterprise Module for Live Patching 15 (src):    kernel-default-4.12.14-150.78.1, kernel-livepatch-SLE15_Update_26-1-1.3.1
SUSE Linux Enterprise High Performance Computing 15-LTSS (src):    kernel-default-4.12.14-150.78.1, kernel-docs-4.12.14-150.78.2, kernel-obs-build-4.12.14-150.78.2, kernel-source-4.12.14-150.78.1, kernel-syms-4.12.14-150.78.1, kernel-vanilla-4.12.14-150.78.1
SUSE Linux Enterprise High Performance Computing 15-ESPOS (src):    kernel-default-4.12.14-150.78.1, kernel-docs-4.12.14-150.78.2, kernel-obs-build-4.12.14-150.78.2, kernel-source-4.12.14-150.78.1, kernel-syms-4.12.14-150.78.1, kernel-vanilla-4.12.14-150.78.1
SUSE Linux Enterprise High Availability 15 (src):    kernel-default-4.12.14-150.78.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 28 Swamp Workflow Management 2021-12-08 14:17:31 UTC

SUSE-SU-2021:3972-1: An update that solves 40 vulnerabilities and has 47 fixes is now available.

Category: security (important)
Bug References: 1087082,1100416,1108488,1129735,1129898,1133374,1153720,1171420,1176724,1176931,1180624,1181854,1181855,1183050,1183861,1184673,1184804,1185377,1185677,1185726,1185727,1185758,1185973,1186063,1186482,1186483,1186672,1188026,1188172,1188563,1188601,1188613,1188838,1188842,1188876,1188983,1188985,1189057,1189262,1189278,1189291,1189399,1189400,1189418,1189420,1189706,1189846,1189884,1190023,1190025,1190067,1190115,1190117,1190118,1190159,1190276,1190349,1190350,1190351,1190432,1190479,1190534,1190601,1190717,1191193,1191315,1191317,1191318,1191529,1191530,1191628,1191660,1191790,1191801,1191813,1191961,1192036,1192045,1192048,1192267,1192379,1192400,1192444,1192549,1192775,1192781,1192802
CVE References: CVE-2018-13405,CVE-2018-9517,CVE-2019-3874,CVE-2019-3900,CVE-2020-0429,CVE-2020-12770,CVE-2020-3702,CVE-2021-0941,CVE-2021-20322,CVE-2021-22543,CVE-2021-31916,CVE-2021-34556,CVE-2021-34981,CVE-2021-3542,CVE-2021-35477,CVE-2021-3640,CVE-2021-3653,CVE-2021-3655,CVE-2021-3656,CVE-2021-3659,CVE-2021-3679,CVE-2021-3715,CVE-2021-37159,CVE-2021-3732,CVE-2021-3744,CVE-2021-3752,CVE-2021-3753,CVE-2021-37576,CVE-2021-3759,CVE-2021-3760,CVE-2021-3764,CVE-2021-3772,CVE-2021-38160,CVE-2021-38198,CVE-2021-38204,CVE-2021-40490,CVE-2021-41864,CVE-2021-42008,CVE-2021-42252,CVE-2021-42739
JIRA References: 
Sources used:
SUSE OpenStack Cloud Crowbar 9 (src):    kernel-default-4.12.14-95.83.2, kernel-source-4.12.14-95.83.2, kernel-syms-4.12.14-95.83.2
SUSE OpenStack Cloud 9 (src):    kernel-default-4.12.14-95.83.2, kernel-source-4.12.14-95.83.2, kernel-syms-4.12.14-95.83.2
SUSE Linux Enterprise Server for SAP 12-SP4 (src):    kernel-default-4.12.14-95.83.2, kernel-source-4.12.14-95.83.2, kernel-syms-4.12.14-95.83.2
SUSE Linux Enterprise Server 12-SP4-LTSS (src):    kernel-default-4.12.14-95.83.2, kernel-source-4.12.14-95.83.2, kernel-syms-4.12.14-95.83.2
SUSE Linux Enterprise Live Patching 12-SP4 (src):    kernel-default-4.12.14-95.83.2, kgraft-patch-SLE12-SP4_Update_23-1-6.3.1
SUSE Linux Enterprise High Availability 12-SP4 (src):    kernel-default-4.12.14-95.83.2

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 30 Jan Kara 2022-05-11 11:33:25 UTC

It seems the fix still is not in cve/linux-4.4 and cve/linux-3.0. Michal? Do you plan to backport this or do we just admit the fix is not going to happen for older branches? Not sure how serious this is - the CVE score is quite low...

Comment 43 Swamp Workflow Management 2023-02-15 14:30:18 UTC

SUSE-SU-2023:0420-1: An update that solves 9 vulnerabilities and has three fixes is now available.

Category: security (important)
Bug References: 1108488,1205705,1205709,1206073,1206113,1206664,1206677,1206784,1207036,1207125,1207186,1207237
CVE References: CVE-2018-9517,CVE-2022-3564,CVE-2022-3643,CVE-2022-42895,CVE-2022-42896,CVE-2022-4662,CVE-2022-47929,CVE-2023-23454,CVE-2023-23455
JIRA References: 
Sources used:
SUSE Linux Enterprise Server 12-SP2-BCL (src):    kernel-default-4.4.121-92.199.1, kernel-source-4.4.121-92.199.1, kernel-syms-4.4.121-92.199.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 44 Petr Mladek 2023-03-03 13:20:51 UTC

Dennis, are there any plans to backport this for 3.0 as well?

The CVE has really low score. It is possible that the risk of introducing an regression is higher than the risk of keeping the issue unfixed.
Jack, wondered about this as well, see the comment #30.

Comment 45 Denis Kirjanov 2023-03-09 10:55:39 UTC

(In reply to Petr Mladek from comment #44)
> Dennis, are there any plans to backport this for 3.0 as well?
> 
> The CVE has really low score. It is possible that the risk of introducing an
> regression is higher than the risk of keeping the issue unfixed.
> Jack, wondered about this as well, see the comment #30.

Sure, I'll check that

Comment 46 Denis Kirjanov 2023-03-09 14:42:29 UTC

(In reply to Petr Mladek from comment #44)
> Dennis, are there any plans to backport this for 3.0 as well?
> 
> The CVE has really low score. It is possible that the risk of introducing an
> regression is higher than the risk of keeping the issue unfixed.
> Jack, wondered about this as well, see the comment #30.

pushed to users/dkirjanov/cve/linux-3.0/for-next

Comment 48 Denis Kirjanov 2023-03-21 08:43:51 UTC

Assigned back to security-team