Bug 1220430 (CVE-2023-52473)

Summary:	VUL-0: CVE-2023-52473: kernel: thermal: core: Fix NULL pointer dereference in zone registration error path
Product:	[Novell Products] SUSE Security Incidents	Reporter:	SMASH SMASH <smash_bz>
Component:	Incidents	Assignee:	Security Team bot <security-team>
Status:	RESOLVED FIXED	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P3 - Medium	CC:	andrea.mattiazzo, vasant.karasulli
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/395137/
Whiteboard:	CVSSv3.1:SUSE:CVE-2023-52473:5.5:(AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description SMASH SMASH 2024-02-27 11:16:40 UTC

In the Linux kernel, the following vulnerability has been resolved:

thermal: core: Fix NULL pointer dereference in zone registration error path

If device_register() in thermal_zone_device_register_with_trips()
returns an error, the tz variable is set to NULL and subsequently
dereferenced in kfree(tz->tzp).

Commit adc8749b150c ("thermal/drivers/core: Use put_device() if
device_register() fails") added the tz = NULL assignment in question to
avoid a possible double-free after dropping the reference to the zone
device.  However, after commit 4649620d9404 ("thermal: core: Make
thermal_zone_device_unregister() return after freeing the zone"), that
assignment has become redundant, because dropping the reference to the
zone device does not cause the zone object to be freed any more.

Drop it to address the NULL pointer dereference.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-52473
https://www.cve.org/CVERecord?id=CVE-2023-52473
https://lore.kernel.org/linux-cve-announce/2024022547-CVE-2023-52472-fa03@gregkh/T/#u

Patch:
https://git.kernel.org/stable/c/04e6ccfc93c5a1aa1d75a537cf27e418895e20ea

Comment 1 Andrea Mattiazzo 2024-02-27 11:17:08 UTC

Closing since all code streams are not affected or already patched.

Comment 18 Maintenance Automation 2024-06-21 12:30:49 UTC

SUSE-SU-2024:2135-1: An update that solves 428 vulnerabilities, contains 15 features and has 78 security fixes can now be installed.

Category: security (important)
Bug References: 1012628, 1065729, 1181674, 1187716, 1193599, 1194869, 1207948, 1208593, 1209657, 1213573, 1214852, 1215199, 1216196, 1216358, 1216702, 1217169, 1217384, 1217408, 1217489, 1217750, 1217959, 1218205, 1218336, 1218447, 1218562, 1218779, 1218917, 1219104, 1219170, 1219596, 1219623, 1219834, 1220021, 1220045, 1220120, 1220148, 1220328, 1220342, 1220428, 1220430, 1220569, 1220587, 1220738, 1220783, 1220915, 1221044, 1221276, 1221293, 1221303, 1221375, 1221504, 1221612, 1221615, 1221635, 1221645, 1221649, 1221765, 1221777, 1221783, 1221816, 1221829, 1221830, 1221858, 1222115, 1222173, 1222264, 1222273, 1222294, 1222301, 1222303, 1222304, 1222307, 1222357, 1222366, 1222368, 1222371, 1222378, 1222379, 1222385, 1222422, 1222426, 1222428, 1222437, 1222445, 1222459, 1222464, 1222489, 1222522, 1222525, 1222527, 1222531, 1222532, 1222549, 1222550, 1222557, 1222559, 1222563, 1222585, 1222586, 1222596, 1222606, 1222608, 1222613, 1222615, 1222618, 1222622, 1222624, 1222627, 1222630, 1222635, 1222721, 1222727, 1222769, 1222771, 1222772, 1222775, 1222777, 1222780, 1222782, 1222793, 1222799, 1222801, 1222968, 1223007, 1223011, 1223015, 1223016, 1223020, 1223023, 1223024, 1223030, 1223033, 1223034, 1223035, 1223038, 1223039, 1223041, 1223045, 1223046, 1223051, 1223052, 1223058, 1223060, 1223061, 1223076, 1223077, 1223084, 1223111, 1223113, 1223138, 1223143, 1223187, 1223189, 1223190, 1223191, 1223198, 1223202, 1223285, 1223315, 1223338, 1223369, 1223380, 1223384, 1223390, 1223439, 1223462, 1223532, 1223539, 1223575, 1223590, 1223591, 1223592, 1223593, 1223625, 1223628, 1223629, 1223633, 1223634, 1223637, 1223641, 1223643, 1223649, 1223650, 1223651, 1223652, 1223653, 1223654, 1223655, 1223660, 1223661, 1223663, 1223664, 1223665, 1223666, 1223668, 1223669, 1223670, 1223671, 1223675, 1223677, 1223678, 1223686, 1223692, 1223693, 1223695, 1223696, 1223698, 1223705, 1223712, 1223718, 1223728, 1223732, 1223735, 1223739, 1223741, 1223744, 1223745, 1223747, 1223748, 1223749, 1223750, 1223752, 1223754, 1223757, 1223759, 1223761, 1223762, 1223774, 1223782, 1223787, 1223788, 1223789, 1223790, 1223802, 1223805, 1223810, 1223822, 1223827, 1223831, 1223834, 1223838, 1223869, 1223870, 1223871, 1223872, 1223874, 1223944, 1223945, 1223946, 1223991, 1224076, 1224096, 1224098, 1224099, 1224137, 1224166, 1224174, 1224177, 1224180, 1224181, 1224331, 1224348, 1224423, 1224429, 1224430, 1224432, 1224433, 1224437, 1224438, 1224442, 1224443, 1224445, 1224449, 1224477, 1224479, 1224480, 1224481, 1224482, 1224486, 1224487, 1224488, 1224491, 1224492, 1224493, 1224494, 1224495, 1224500, 1224501, 1224502, 1224504, 1224505, 1224506, 1224507, 1224508, 1224509, 1224511, 1224513, 1224517, 1224519, 1224521, 1224524, 1224525, 1224526, 1224530, 1224531, 1224534, 1224537, 1224541, 1224542, 1224543, 1224546, 1224550, 1224552, 1224553, 1224555, 1224557, 1224558, 1224559, 1224562, 1224565, 1224566, 1224567, 1224568, 1224569, 1224571, 1224573, 1224576, 1224577, 1224578, 1224579, 1224580, 1224581, 1224582, 1224585, 1224586, 1224587, 1224588, 1224592, 1224596, 1224598, 1224600, 1224601, 1224602, 1224603, 1224605, 1224607, 1224608, 1224609, 1224611, 1224613, 1224615, 1224617, 1224618, 1224620, 1224621, 1224622, 1224623, 1224624, 1224626, 1224627, 1224628, 1224629, 1224630, 1224632, 1224633, 1224634, 1224636, 1224637, 1224638, 1224639, 1224640, 1224643, 1224644, 1224645, 1224646, 1224647, 1224648, 1224649, 1224650, 1224651, 1224652, 1224653, 1224654, 1224657, 1224660, 1224663, 1224664, 1224665, 1224666, 1224667, 1224668, 1224671, 1224672, 1224674, 1224675, 1224676, 1224677, 1224678, 1224679, 1224680, 1224681, 1224682, 1224683, 1224685, 1224686, 1224687, 1224688, 1224692, 1224696, 1224697, 1224699, 1224701, 1224703, 1224704, 1224705, 1224706, 1224707, 1224709, 1224710, 1224712, 1224714, 1224716, 1224717, 1224718, 1224719, 1224720, 1224721, 1224722, 1224723, 1224725, 1224727, 1224728, 1224729, 1224730, 1224731, 1224732, 1224733, 1224736, 1224738, 1224739, 1224740, 1224741, 1224742, 1224747, 1224749, 1224763, 1224764, 1224765, 1224766, 1224790, 1224792, 1224793, 1224803, 1224804, 1224866, 1224936, 1224989, 1225007, 1225053, 1225133, 1225134, 1225136, 1225172, 1225502, 1225578, 1225579, 1225580, 1225593, 1225605, 1225607, 1225610, 1225616, 1225618, 1225640, 1225642, 1225692, 1225694, 1225695, 1225696, 1225698, 1225699, 1225704, 1225705, 1225708, 1225710, 1225712, 1225714, 1225715, 1225720, 1225722, 1225728, 1225734, 1225735, 1225736, 1225747, 1225748, 1225749, 1225750, 1225756, 1225765, 1225766, 1225769, 1225773, 1225775, 1225842, 1225945
CVE References: CVE-2023-0160, CVE-2023-47233, CVE-2023-52434, CVE-2023-52458, CVE-2023-52463, CVE-2023-52472, CVE-2023-52483, CVE-2023-52492, CVE-2023-52503, CVE-2023-52591, CVE-2023-52608, CVE-2023-52616, CVE-2023-52618, CVE-2023-52631, CVE-2023-52635, CVE-2023-52640, CVE-2023-52641, CVE-2023-52645, CVE-2023-52652, CVE-2023-52653, CVE-2023-52654, CVE-2023-52655, CVE-2023-52657, CVE-2023-52658, CVE-2023-52659, CVE-2023-52660, CVE-2023-52661, CVE-2023-52662, CVE-2023-52663, CVE-2023-52664, CVE-2023-52667, CVE-2023-52669, CVE-2023-52670, CVE-2023-52671, CVE-2023-52673, CVE-2023-52674, CVE-2023-52675, CVE-2023-52676, CVE-2023-52678, CVE-2023-52679, CVE-2023-52680, CVE-2023-52681, CVE-2023-52683, CVE-2023-52685, CVE-2023-52686, CVE-2023-52687, CVE-2023-52690, CVE-2023-52691, CVE-2023-52692, CVE-2023-52693, CVE-2023-52694, CVE-2023-52695, CVE-2023-52696, CVE-2023-52697, CVE-2023-52698, CVE-2023-52771, CVE-2023-52772, CVE-2023-52860, CVE-2023-52882, CVE-2023-6238, CVE-2023-6270, CVE-2023-6531, CVE-2023-7042, CVE-2024-0639, CVE-2024-21823, CVE-2024-22099, CVE-2024-23848, CVE-2024-24861, CVE-2024-25739, CVE-2024-26601, CVE-2024-26611, CVE-2024-26614, CVE-2024-26632, CVE-2024-26638, CVE-2024-26642, CVE-2024-26643, CVE-2024-26652, CVE-2024-26654, CVE-2024-26656, CVE-2024-26657, CVE-2024-26671, CVE-2024-26673, CVE-2024-26674, CVE-2024-26675, CVE-2024-26679, CVE-2024-26684, CVE-2024-26685, CVE-2024-26692, CVE-2024-26696, CVE-2024-26697, CVE-2024-26704, CVE-2024-26714, CVE-2024-26726, CVE-2024-26731, CVE-2024-26733, CVE-2024-26736, CVE-2024-26737, CVE-2024-26739, CVE-2024-26740, CVE-2024-26742, CVE-2024-26756, CVE-2024-26757, CVE-2024-26760, CVE-2024-267600, CVE-2024-26761, CVE-2024-26764, CVE-2024-26769, CVE-2024-26772, CVE-2024-26773, CVE-2024-26774, CVE-2024-26775, CVE-2024-26779, CVE-2024-26783, CVE-2024-26786, CVE-2024-26791, CVE-2024-26793, CVE-2024-26794, CVE-2024-26802, CVE-2024-26805, CVE-2024-26807, CVE-2024-26815, CVE-2024-26816, CVE-2024-26822, CVE-2024-26828, CVE-2024-26832, CVE-2024-26836, CVE-2024-26844, CVE-2024-26846, CVE-2024-26848, CVE-2024-26853, CVE-2024-26854, CVE-2024-26855, CVE-2024-26856, CVE-2024-26857, CVE-2024-26858, CVE-2024-26860, CVE-2024-26861, CVE-2024-26862, CVE-2024-26866, CVE-2024-26868, CVE-2024-26870, CVE-2024-26878, CVE-2024-26881, CVE-2024-26882, CVE-2024-26883, CVE-2024-26884, CVE-2024-26885, CVE-2024-26898, CVE-2024-26899, CVE-2024-26900, CVE-2024-26901, CVE-2024-26903, CVE-2024-26906, CVE-2024-26909, CVE-2024-26921, CVE-2024-26922, CVE-2024-26923, CVE-2024-26925, CVE-2024-26928, CVE-2024-26932, CVE-2024-26933, CVE-2024-26934, CVE-2024-26935, CVE-2024-26937, CVE-2024-26938, CVE-2024-26940, CVE-2024-26943, CVE-2024-26945, CVE-2024-26946, CVE-2024-26948, CVE-2024-26949, CVE-2024-26950, CVE-2024-26951, CVE-2024-26956, CVE-2024-26957, CVE-2024-26958, CVE-2024-26960, CVE-2024-26961, CVE-2024-26962, CVE-2024-26963, CVE-2024-26964, CVE-2024-26972, CVE-2024-26973, CVE-2024-26978, CVE-2024-26979, CVE-2024-26981, CVE-2024-26982, CVE-2024-26983, CVE-2024-26984, CVE-2024-26986, CVE-2024-26988, CVE-2024-26989, CVE-2024-26990, CVE-2024-26991, CVE-2024-26992, CVE-2024-26993, CVE-2024-26994, CVE-2024-26995, CVE-2024-26996, CVE-2024-26997, CVE-2024-26999, CVE-2024-27000, CVE-2024-27001, CVE-2024-27002, CVE-2024-27003, CVE-2024-27004, CVE-2024-27008, CVE-2024-27013, CVE-2024-27014, CVE-2024-27022, CVE-2024-27027, CVE-2024-27028, CVE-2024-27029, CVE-2024-27030, CVE-2024-27031, CVE-2024-27036, CVE-2024-27046, CVE-2024-27056, CVE-2024-27057, CVE-2024-27062, CVE-2024-27067, CVE-2024-27080, CVE-2024-27388, CVE-2024-27389, CVE-2024-27393, CVE-2024-27395, CVE-2024-27396, CVE-2024-27398, CVE-2024-27399, CVE-2024-27400, CVE-2024-27401, CVE-2024-27405, CVE-2024-27408, CVE-2024-27410, CVE-2024-27411, CVE-2024-27412, CVE-2024-27413, CVE-2024-27416, CVE-2024-27417, CVE-2024-27418, CVE-2024-27431, CVE-2024-27432, CVE-2024-27434, CVE-2024-27435, CVE-2024-27436, CVE-2024-35784, CVE-2024-35786, CVE-2024-35788, CVE-2024-35789, CVE-2024-35790, CVE-2024-35791, CVE-2024-35794, CVE-2024-35795, CVE-2024-35796, CVE-2024-35799, CVE-2024-35800, CVE-2024-35801, CVE-2024-35803, CVE-2024-35804, CVE-2024-35806, CVE-2024-35808, CVE-2024-35809, CVE-2024-35810, CVE-2024-35811, CVE-2024-35812, CVE-2024-35813, CVE-2024-35814, CVE-2024-35815, CVE-2024-35817, CVE-2024-35819, CVE-2024-35821, CVE-2024-35822, CVE-2024-35823, CVE-2024-35824, CVE-2024-35825, CVE-2024-35828, CVE-2024-35829, CVE-2024-35830, CVE-2024-35833, CVE-2024-35834, CVE-2024-35835, CVE-2024-35836, CVE-2024-35837, CVE-2024-35838, CVE-2024-35841, CVE-2024-35842, CVE-2024-35845, CVE-2024-35847, CVE-2024-35849, CVE-2024-35850, CVE-2024-35851, CVE-2024-35852, CVE-2024-35854, CVE-2024-35860, CVE-2024-35861, CVE-2024-35862, CVE-2024-35863, CVE-2024-35864, CVE-2024-35865, CVE-2024-35866, CVE-2024-35867, CVE-2024-35868, CVE-2024-35869, CVE-2024-35870, CVE-2024-35872, CVE-2024-35875, CVE-2024-35877, CVE-2024-35878, CVE-2024-35879, CVE-2024-35883, CVE-2024-35885, CVE-2024-35887, CVE-2024-35889, CVE-2024-35891, CVE-2024-35895, CVE-2024-35901, CVE-2024-35903, CVE-2024-35904, CVE-2024-35905, CVE-2024-35907, CVE-2024-35909, CVE-2024-35911, CVE-2024-35912, CVE-2024-35914, CVE-2024-35915, CVE-2024-35916, CVE-2024-35917, CVE-2024-35921, CVE-2024-35922, CVE-2024-35924, CVE-2024-35927, CVE-2024-35928, CVE-2024-35930, CVE-2024-35931, CVE-2024-35932, CVE-2024-35933, CVE-2024-35935, CVE-2024-35936, CVE-2024-35937, CVE-2024-35938, CVE-2024-35940, CVE-2024-35943, CVE-2024-35944, CVE-2024-35945, CVE-2024-35946, CVE-2024-35947, CVE-2024-35950, CVE-2024-35951, CVE-2024-35952, CVE-2024-35953, CVE-2024-35954, CVE-2024-35955, CVE-2024-35956, CVE-2024-35958, CVE-2024-35959, CVE-2024-35960, CVE-2024-35961, CVE-2024-35963, CVE-2024-35964, CVE-2024-35965, CVE-2024-35966, CVE-2024-35967, CVE-2024-35969, CVE-2024-35971, CVE-2024-35972, CVE-2024-35973, CVE-2024-35974, CVE-2024-35975, CVE-2024-35977, CVE-2024-35978, CVE-2024-35981, CVE-2024-35982, CVE-2024-35984, CVE-2024-35986, CVE-2024-35989, CVE-2024-35990, CVE-2024-35991, CVE-2024-35992, CVE-2024-35995, CVE-2024-35997, CVE-2024-35999, CVE-2024-36002, CVE-2024-36006, CVE-2024-36007, CVE-2024-36009, CVE-2024-36011, CVE-2024-36012, CVE-2024-36013, CVE-2024-36014, CVE-2024-36015, CVE-2024-36016, CVE-2024-36018, CVE-2024-36019, CVE-2024-36020, CVE-2024-36021, CVE-2024-36025, CVE-2024-36026, CVE-2024-36029, CVE-2024-36030, CVE-2024-36032, CVE-2024-36880, CVE-2024-36885, CVE-2024-36890, CVE-2024-36891, CVE-2024-36893, CVE-2024-36894, CVE-2024-36895, CVE-2024-36896, CVE-2024-36897, CVE-2024-36898, CVE-2024-36906, CVE-2024-36918, CVE-2024-36921, CVE-2024-36922, CVE-2024-36928, CVE-2024-36930, CVE-2024-36931, CVE-2024-36936, CVE-2024-36940, CVE-2024-36941, CVE-2024-36942, CVE-2024-36944, CVE-2024-36947, CVE-2024-36949, CVE-2024-36950, CVE-2024-36951, CVE-2024-36955, CVE-2024-36959
Jira References: PED-3184, PED-3311, PED-3535, PED-4486, PED-4593, PED-5062, PED-542, PED-5728, PED-5853, PED-6079, PED-6252, PED-7542, PED-7619, PED-8111, PED-8240
Maintenance Incident: [SUSE:Maintenance:34127](https://smelt.suse.de/incident/34127/)
Sources used:
openSUSE Leap 15.6 (src):
 kernel-syms-azure-6.4.0-150600.8.5.1, kernel-source-azure-6.4.0-150600.8.5.4
Public Cloud Module 15-SP6 (src):
 kernel-syms-azure-6.4.0-150600.8.5.1, kernel-source-azure-6.4.0-150600.8.5.4

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.