Bugzilla – Bug 1224977
VUL-0: CVE-2021-47294: kernel: netrom: Decrease sock refcount when sock timers expire
Last modified: 2024-07-18 16:35:42 UTC
In the Linux kernel, the following vulnerability has been resolved: netrom: Decrease sock refcount when sock timers expire Commit 63346650c1a9 ("netrom: switch to sock timer API") switched to use sock timer API. It replaces mod_timer() by sk_reset_timer(), and del_timer() by sk_stop_timer(). Function sk_reset_timer() will increase the refcount of sock if it is called on an inactive timer, hence, in case the timer expires, we need to decrease the refcount ourselves in the handler, otherwise, the sock refcount will be unbalanced and the sock will never be freed. References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-47294 https://www.cve.org/CVERecord?id=CVE-2021-47294 https://git.kernel.org/stable/c/25df44e90ff5959b5c24ad361b648504a7e39ef3 https://git.kernel.org/stable/c/48866fd5c361ea417ed24b43fc2a7dc2f5b060ef https://git.kernel.org/stable/c/517a16b1a88bdb6b530f48d5d153478b2552d9a8 https://git.kernel.org/stable/c/6811744bd0efb9e472cb15d066cdb460beb8cb8a https://git.kernel.org/stable/c/853262355518cd1247515b74e83fabf038aa6c29 https://git.kernel.org/stable/c/9619cc7d97c3aa8ed3cfd2b8678b74fb6d6c7950 https://git.kernel.org/stable/c/a01634bf91f2b6c42583770eb6815fb6d1e251cf https://git.kernel.org/stable/c/bc1660206c3723c37ed4d622ad81781f1e987250 https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2021/CVE-2021-47294.mbox
Fixed in: SLE12-SP5 44bce119857 netrom: Decrease sock refcount when sock timers expire (CVE-2021-47294 bsc#1224977). Assigning back to the security team
SUSE-SU-2024:2360-1: An update that solves 148 vulnerabilities and has 15 security fixes can now be installed. Category: security (important) Bug References: 1119113, 1171988, 1191958, 1195065, 1195254, 1195775, 1204514, 1216062, 1217912, 1218148, 1219224, 1221010, 1221647, 1221654, 1221791, 1221958, 1222015, 1222080, 1222364, 1222385, 1222435, 1222809, 1222866, 1222879, 1222893, 1223013, 1223018, 1223021, 1223043, 1223384, 1223532, 1223641, 1224177, 1224432, 1224504, 1224549, 1224552, 1224572, 1224575, 1224583, 1224588, 1224605, 1224651, 1224660, 1224661, 1224662, 1224664, 1224668, 1224670, 1224672, 1224674, 1224677, 1224678, 1224703, 1224735, 1224739, 1224763, 1224764, 1224765, 1224946, 1224951, 1224967, 1224976, 1224977, 1224978, 1224993, 1224997, 1225047, 1225140, 1225184, 1225203, 1225232, 1225261, 1225306, 1225337, 1225372, 1225463, 1225484, 1225487, 1225490, 1225514, 1225518, 1225548, 1225555, 1225556, 1225559, 1225571, 1225573, 1225577, 1225583, 1225585, 1225599, 1225602, 1225611, 1225642, 1225681, 1225704, 1225722, 1225749, 1225758, 1225760, 1225761, 1225767, 1225770, 1225815, 1225840, 1225848, 1225866, 1225872, 1225894, 1225895, 1225898, 1226211, 1226212, 1226537, 1226554, 1226557, 1226562, 1226567, 1226575, 1226577, 1226593, 1226595, 1226597, 1226610, 1226614, 1226619, 1226621, 1226634, 1226637, 1226670, 1226672, 1226692, 1226698, 1226699, 1226701, 1226705, 1226708, 1226711, 1226712, 1226716, 1226718, 1226732, 1226735, 1226744, 1226746, 1226747, 1226749, 1226754, 1226767, 1226769, 1226857, 1226876, 1226883, 1226886, 1226895, 1226948, 1226949, 1226950, 1226962, 1226976, 1226996, 1227101 CVE References: CVE-2020-10135, CVE-2021-43389, CVE-2021-4439, CVE-2021-47103, CVE-2021-47191, CVE-2021-47193, CVE-2021-47267, CVE-2021-47270, CVE-2021-47293, CVE-2021-47294, CVE-2021-47297, CVE-2021-47309, CVE-2021-47328, CVE-2021-47354, CVE-2021-47372, CVE-2021-47379, CVE-2021-47407, CVE-2021-47418, CVE-2021-47434, CVE-2021-47445, CVE-2021-47518, CVE-2021-47544, CVE-2021-47566, CVE-2021-47571, CVE-2021-47576, CVE-2021-47587, CVE-2021-47589, CVE-2021-47600, CVE-2021-47602, CVE-2021-47603, CVE-2021-47609, CVE-2021-47617, CVE-2022-0435, CVE-2022-22942, CVE-2022-48711, CVE-2022-48715, CVE-2022-48722, CVE-2022-48732, CVE-2022-48733, CVE-2022-48740, CVE-2022-48743, CVE-2022-48754, CVE-2022-48756, CVE-2022-48758, CVE-2022-48759, CVE-2022-48760, CVE-2022-48761, CVE-2022-48771, CVE-2022-48772, CVE-2023-24023, CVE-2023-52622, CVE-2023-52675, CVE-2023-52737, CVE-2023-52752, CVE-2023-52754, CVE-2023-52757, CVE-2023-52762, CVE-2023-52764, CVE-2023-52784, CVE-2023-52808, CVE-2023-52809, CVE-2023-5281, CVE-2023-52832, CVE-2023-52834, CVE-2023-52835, CVE-2023-52843, CVE-2023-52845, CVE-2023-52855, CVE-2023-52881, CVE-2024-26633, CVE-2024-26641, CVE-2024-26679, CVE-2024-26687, CVE-2024-26720, CVE-2024-26813, CVE-2024-26845, CVE-2024-26863, CVE-2024-26894, CVE-2024-26923, CVE-2024-26928, CVE-2024-26973, CVE-2024-27399, CVE-2024-27410, CVE-2024-35247, CVE-2024-35807, CVE-2024-35822, CVE-2024-35835, CVE-2024-35862, CVE-2024-35863, CVE-2024-35864, CVE-2024-35865, CVE-2024-35867, CVE-2024-35868, CVE-2024-35870, CVE-2024-35886, CVE-2024-35896, CVE-2024-35922, CVE-2024-35925, CVE-2024-35930, CVE-2024-35950, CVE-2024-35956, CVE-2024-35958, CVE-2024-35960, CVE-2024-35962, CVE-2024-35976, CVE-2024-35979, CVE-2024-35997, CVE-2024-35998, CVE-2024-36016, CVE-2024-36017, CVE-2024-36025, CVE-2024-36479, CVE-2024-36592, CVE-2024-36880, CVE-2024-36894, CVE-2024-36915, CVE-2024-36917, CVE-2024-36919, CVE-2024-36923, CVE-2024-36934, CVE-2024-36938, CVE-2024-36940, CVE-2024-36949, CVE-2024-36950, CVE-2024-36960, CVE-2024-36964, CVE-2024-37021, CVE-2024-37354, CVE-2024-38544, CVE-2024-38545, CVE-2024-38546, CVE-2024-38549, CVE-2024-38552, CVE-2024-38553, CVE-2024-38565, CVE-2024-38567, CVE-2024-38578, CVE-2024-38579, CVE-2024-38580, CVE-2024-38597, CVE-2024-38601, CVE-2024-38608, CVE-2024-38618, CVE-2024-38621, CVE-2024-38627, CVE-2024-38659, CVE-2024-38661, CVE-2024-38780 Maintenance Incident: [SUSE:Maintenance:34677](https://smelt.suse.de/incident/34677/) Sources used: SUSE Linux Enterprise Server for SAP Applications 12 SP5 (src): kernel-syms-azure-4.12.14-16.191.1, kernel-source-azure-4.12.14-16.191.1 SUSE Linux Enterprise High Performance Computing 12 SP5 (src): kernel-syms-azure-4.12.14-16.191.1, kernel-source-azure-4.12.14-16.191.1 SUSE Linux Enterprise Server 12 SP5 (src): kernel-syms-azure-4.12.14-16.191.1, kernel-source-azure-4.12.14-16.191.1 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.
SUSE-SU-2024:2381-1: An update that solves 143 vulnerabilities and has 18 security fixes can now be installed. Category: security (important) Bug References: 1119113, 1191958, 1195065, 1195254, 1195775, 1204514, 1216062, 1217912, 1218148, 1219224, 1221010, 1221647, 1221654, 1221791, 1221958, 1222015, 1222080, 1222364, 1222385, 1222435, 1222809, 1222866, 1222879, 1222893, 1223013, 1223018, 1223021, 1223043, 1223532, 1223641, 1224177, 1224432, 1224504, 1224549, 1224552, 1224572, 1224575, 1224583, 1224588, 1224605, 1224651, 1224660, 1224661, 1224662, 1224664, 1224668, 1224670, 1224672, 1224674, 1224677, 1224678, 1224703, 1224735, 1224739, 1224763, 1224764, 1224765, 1224946, 1224951, 1224967, 1224976, 1224977, 1224978, 1224993, 1224997, 1225047, 1225140, 1225184, 1225203, 1225232, 1225261, 1225306, 1225337, 1225372, 1225463, 1225484, 1225487, 1225490, 1225514, 1225518, 1225548, 1225555, 1225556, 1225559, 1225571, 1225573, 1225577, 1225583, 1225585, 1225599, 1225602, 1225611, 1225642, 1225681, 1225704, 1225722, 1225749, 1225758, 1225760, 1225761, 1225767, 1225770, 1225815, 1225840, 1225848, 1225866, 1225872, 1225894, 1225895, 1225898, 1226211, 1226212, 1226537, 1226554, 1226557, 1226562, 1226567, 1226575, 1226577, 1226593, 1226595, 1226597, 1226610, 1226614, 1226619, 1226621, 1226634, 1226637, 1226670, 1226672, 1226692, 1226698, 1226699, 1226701, 1226705, 1226708, 1226711, 1226712, 1226716, 1226718, 1226732, 1226735, 1226744, 1226746, 1226747, 1226749, 1226754, 1226767, 1226769, 1226857, 1226876, 1226883, 1226886, 1226895, 1226948, 1226949, 1226950, 1226962, 1226976, 1226996, 1227101 CVE References: CVE-2021-4439, CVE-2021-47103, CVE-2021-47191, CVE-2021-47193, CVE-2021-47267, CVE-2021-47270, CVE-2021-47293, CVE-2021-47294, CVE-2021-47297, CVE-2021-47309, CVE-2021-47328, CVE-2021-47354, CVE-2021-47372, CVE-2021-47379, CVE-2021-47407, CVE-2021-47418, CVE-2021-47434, CVE-2021-47445, CVE-2021-47518, CVE-2021-47544, CVE-2021-47566, CVE-2021-47571, CVE-2021-47576, CVE-2021-47587, CVE-2021-47589, CVE-2021-47600, CVE-2021-47602, CVE-2021-47603, CVE-2021-47609, CVE-2021-47617, CVE-2022-48711, CVE-2022-48715, CVE-2022-48722, CVE-2022-48732, CVE-2022-48733, CVE-2022-48740, CVE-2022-48743, CVE-2022-48754, CVE-2022-48756, CVE-2022-48758, CVE-2022-48759, CVE-2022-48760, CVE-2022-48761, CVE-2022-48771, CVE-2022-48772, CVE-2023-24023, CVE-2023-52622, CVE-2023-52675, CVE-2023-52737, CVE-2023-52752, CVE-2023-52754, CVE-2023-52757, CVE-2023-52762, CVE-2023-52764, CVE-2023-52784, CVE-2023-52808, CVE-2023-52809, CVE-2023-5281, CVE-2023-52832, CVE-2023-52834, CVE-2023-52835, CVE-2023-52843, CVE-2023-52845, CVE-2023-52855, CVE-2023-52881, CVE-2024-26633, CVE-2024-26641, CVE-2024-26679, CVE-2024-26687, CVE-2024-26720, CVE-2024-26813, CVE-2024-26845, CVE-2024-26863, CVE-2024-26894, CVE-2024-26928, CVE-2024-26973, CVE-2024-27399, CVE-2024-27410, CVE-2024-35247, CVE-2024-35807, CVE-2024-35822, CVE-2024-35835, CVE-2024-35862, CVE-2024-35863, CVE-2024-35864, CVE-2024-35865, CVE-2024-35867, CVE-2024-35868, CVE-2024-35870, CVE-2024-35886, CVE-2024-35896, CVE-2024-35922, CVE-2024-35925, CVE-2024-35930, CVE-2024-35950, CVE-2024-35956, CVE-2024-35958, CVE-2024-35960, CVE-2024-35962, CVE-2024-35976, CVE-2024-35979, CVE-2024-35997, CVE-2024-35998, CVE-2024-36016, CVE-2024-36017, CVE-2024-36025, CVE-2024-36479, CVE-2024-36592, CVE-2024-36880, CVE-2024-36894, CVE-2024-36915, CVE-2024-36917, CVE-2024-36919, CVE-2024-36923, CVE-2024-36934, CVE-2024-36938, CVE-2024-36940, CVE-2024-36949, CVE-2024-36950, CVE-2024-36960, CVE-2024-36964, CVE-2024-37021, CVE-2024-37354, CVE-2024-38544, CVE-2024-38545, CVE-2024-38546, CVE-2024-38549, CVE-2024-38552, CVE-2024-38553, CVE-2024-38565, CVE-2024-38567, CVE-2024-38578, CVE-2024-38579, CVE-2024-38580, CVE-2024-38597, CVE-2024-38601, CVE-2024-38608, CVE-2024-38618, CVE-2024-38621, CVE-2024-38627, CVE-2024-38659, CVE-2024-38661, CVE-2024-38780 Maintenance Incident: [SUSE:Maintenance:34690](https://smelt.suse.de/incident/34690/) Sources used: SUSE Linux Enterprise Real Time 12 SP5 (src): kernel-source-rt-4.12.14-10.191.1, kernel-syms-rt-4.12.14-10.191.1 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.
SUSE-SU-2024:2561-1: An update that solves 176 vulnerabilities and has 17 security fixes can now be installed. Category: security (important) Bug References: 1119113, 1171988, 1191958, 1195065, 1195254, 1195775, 1204514, 1215420, 1216062, 1217912, 1218148, 1219224, 1220833, 1221010, 1221647, 1221654, 1221656, 1221659, 1221791, 1221958, 1222005, 1222015, 1222080, 1222364, 1222385, 1222435, 1222792, 1222809, 1222866, 1222879, 1222893, 1223013, 1223018, 1223021, 1223043, 1223188, 1223384, 1223532, 1223641, 1224177, 1224432, 1224504, 1224549, 1224552, 1224572, 1224575, 1224583, 1224588, 1224605, 1224622, 1224627, 1224647, 1224651, 1224660, 1224661, 1224662, 1224664, 1224668, 1224670, 1224672, 1224674, 1224677, 1224678, 1224683, 1224686, 1224703, 1224735, 1224739, 1224743, 1224763, 1224764, 1224765, 1224946, 1224951, 1224965, 1224967, 1224976, 1224977, 1224978, 1224993, 1224997, 1225047, 1225140, 1225184, 1225203, 1225229, 1225232, 1225261, 1225306, 1225337, 1225357, 1225372, 1225431, 1225463, 1225478, 1225484, 1225487, 1225490, 1225505, 1225514, 1225518, 1225530, 1225532, 1225548, 1225555, 1225556, 1225559, 1225569, 1225571, 1225573, 1225577, 1225583, 1225585, 1225593, 1225599, 1225602, 1225611, 1225642, 1225681, 1225704, 1225722, 1225749, 1225758, 1225760, 1225761, 1225767, 1225770, 1225815, 1225835, 1225840, 1225848, 1225866, 1225872, 1225894, 1225895, 1225898, 1226211, 1226212, 1226537, 1226554, 1226557, 1226562, 1226567, 1226575, 1226577, 1226593, 1226595, 1226597, 1226610, 1226614, 1226619, 1226621, 1226634, 1226637, 1226670, 1226672, 1226692, 1226698, 1226699, 1226701, 1226705, 1226708, 1226711, 1226712, 1226716, 1226718, 1226732, 1226735, 1226744, 1226746, 1226747, 1226749, 1226754, 1226757, 1226767, 1226769, 1226857, 1226861, 1226876, 1226883, 1226886, 1226895, 1226948, 1226949, 1226950, 1226962, 1226976, 1226994, 1226996, 1227101, 1227407, 1227435, 1227487 CVE References: CVE-2020-10135, CVE-2021-43389, CVE-2021-4439, CVE-2021-47103, CVE-2021-47145, CVE-2021-47191, CVE-2021-47193, CVE-2021-47201, CVE-2021-47267, CVE-2021-47270, CVE-2021-47275, CVE-2021-47293, CVE-2021-47294, CVE-2021-47297, CVE-2021-47309, CVE-2021-47328, CVE-2021-47354, CVE-2021-47372, CVE-2021-47379, CVE-2021-47407, CVE-2021-47418, CVE-2021-47434, CVE-2021-47438, CVE-2021-47445, CVE-2021-47498, CVE-2021-47518, CVE-2021-47520, CVE-2021-47544, CVE-2021-47547, CVE-2021-47566, CVE-2021-47571, CVE-2021-47576, CVE-2021-47587, CVE-2021-47589, CVE-2021-47600, CVE-2021-47602, CVE-2021-47603, CVE-2021-47609, CVE-2021-47617, CVE-2022-0435, CVE-2022-22942, CVE-2022-48711, CVE-2022-48715, CVE-2022-48722, CVE-2022-48732, CVE-2022-48733, CVE-2022-48740, CVE-2022-48743, CVE-2022-48754, CVE-2022-48756, CVE-2022-48758, CVE-2022-48759, CVE-2022-48760, CVE-2022-48761, CVE-2022-48771, CVE-2022-48772, CVE-2023-24023, CVE-2023-4244, CVE-2023-52507, CVE-2023-52622, CVE-2023-52675, CVE-2023-52683, CVE-2023-52693, CVE-2023-52737, CVE-2023-52752, CVE-2023-52753, CVE-2023-52754, CVE-2023-52757, CVE-2023-52762, CVE-2023-52764, CVE-2023-52784, CVE-2023-52808, CVE-2023-52809, CVE-2023-5281, CVE-2023-52817, CVE-2023-52818, CVE-2023-52819, CVE-2023-52832, CVE-2023-52834, CVE-2023-52835, CVE-2023-52843, CVE-2023-52845, CVE-2023-52855, CVE-2023-52881, CVE-2024-26633, CVE-2024-26635, CVE-2024-26636, CVE-2024-26641, CVE-2024-26679, CVE-2024-26687, CVE-2024-26720, CVE-2024-26813, CVE-2024-26845, CVE-2024-26863, CVE-2024-26880, CVE-2024-26894, CVE-2024-26923, CVE-2024-26928, CVE-2024-26973, CVE-2024-27399, CVE-2024-27410, CVE-2024-35247, CVE-2024-35805, CVE-2024-35807, CVE-2024-35819, CVE-2024-35822, CVE-2024-35828, CVE-2024-35835, CVE-2024-35862, CVE-2024-35863, CVE-2024-35864, CVE-2024-35865, CVE-2024-35867, CVE-2024-35868, CVE-2024-35870, CVE-2024-35886, CVE-2024-35896, CVE-2024-35922, CVE-2024-35925, CVE-2024-35930, CVE-2024-35947, CVE-2024-35950, CVE-2024-35956, CVE-2024-35958, CVE-2024-35960, CVE-2024-35962, CVE-2024-35976, CVE-2024-35979, CVE-2024-35997, CVE-2024-35998, CVE-2024-36014, CVE-2024-36016, CVE-2024-36017, CVE-2024-36025, CVE-2024-36479, CVE-2024-36880, CVE-2024-36894, CVE-2024-36915, CVE-2024-36917, CVE-2024-36919, CVE-2024-36923, CVE-2024-36934, CVE-2024-36938, CVE-2024-36940, CVE-2024-36941, CVE-2024-36949, CVE-2024-36950, CVE-2024-36952, CVE-2024-36960, CVE-2024-36964, CVE-2024-37021, CVE-2024-37354, CVE-2024-38544, CVE-2024-38545, CVE-2024-38546, CVE-2024-38549, CVE-2024-38552, CVE-2024-38553, CVE-2024-38565, CVE-2024-38567, CVE-2024-38578, CVE-2024-38579, CVE-2024-38580, CVE-2024-38597, CVE-2024-38598, CVE-2024-38601, CVE-2024-38608, CVE-2024-38618, CVE-2024-38619, CVE-2024-38621, CVE-2024-38627, CVE-2024-38659, CVE-2024-38661, CVE-2024-38780, CVE-2024-39301, CVE-2024-39475 Maintenance Incident: [SUSE:Maintenance:34719](https://smelt.suse.de/incident/34719/) Sources used: SUSE Linux Enterprise Live Patching 12-SP5 (src): kgraft-patch-SLE12-SP5_Update_58-1-8.3.1 SUSE Linux Enterprise Software Development Kit 12 SP5 (src): kernel-obs-build-4.12.14-122.222.1 SUSE Linux Enterprise High Performance Computing 12 SP5 (src): kernel-syms-4.12.14-122.222.1, kernel-source-4.12.14-122.222.1 SUSE Linux Enterprise Server 12 SP5 (src): kernel-syms-4.12.14-122.222.1, kernel-source-4.12.14-122.222.1 SUSE Linux Enterprise Server for SAP Applications 12 SP5 (src): kernel-syms-4.12.14-122.222.1, kernel-source-4.12.14-122.222.1 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.