In the Linux kernel, the following vulnerability has been resolved:
net/smc: fix wrong list_del in smc_lgr_cleanup_early
smc_lgr_cleanup_early() meant to delete the link group from the link group list, but it deleted the list head by mistake.
This may cause memory corruption since we didn't remove the real link group from the list and later memseted the link group structure. We got a list corruption panic when testing:
[ 231.277259] list_del corruption. prev->next should be ffff8881398a8000, but was 0000000000000000 [ 231.278222] ------------[ cut here ]------------ [ 231.278726] kernel BUG at lib/list_debug.c:53! [ 231.279326] invalid opcode: 0000 [#1] SMP NOPTI [ 231.279803] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.10.46+ #435 [ 231.280466] Hardware name: Alibaba Cloud ECS, BIOS 8c24b4c 04/01/2014 [ 231.281248] Workqueue: events smc_link_down_work [ 231.281732] RIP: 0010:__list_del_entry_valid+0x70/0x90 [ 231.282258] Code: 4c 60 82 e8 7d cc 6a 00 0f 0b 48 89 fe 48 c7 c7 88 4c 60 82 e8 6c cc 6a 00 0f 0b 48 89 fe 48 c7 c7 c0 4c 60 82 e8 5b cc 6a 00 <0f> 0b 48 89 fe 48 c7 c7 00 4d 60 82 e8 4a cc 6a 00 0f 0b cc cc cc [ 231.284146] RSP: 0018:ffffc90000033d58 EFLAGS: 00010292 [ 231.284685] RAX: 0000000000000054 RBX: ffff8881398a8000 RCX: 0000000000000000 [ 231.285415] RDX: 0000000000000001 RSI: ffff88813bc18040 RDI: ffff88813bc18040 [ 231.286141] RBP: ffffffff8305ad40 R08: 0000000000000003 R09: 0000000000000001 [ 231.286873] R10: ffffffff82803da0 R11: ffffc90000033b90 R12: 0000000000000001 [ 231.287606] R13: 0000000000000000 R14: ffff8881398a8000 R15: 0000000000000003 [ 231.288337] FS: 0000000000000000(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 [ 231.289160] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 231.289754] CR2: 0000000000e72058 CR3: 000000010fa96006 CR4: 00000000003706f0 [ 231.290485] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 231.291211] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 231.291940] Call Trace: [ 231.292211] smc_lgr_terminate_sched+0x53/0xa0 [ 231.292677] smc_switch_conns+0x75/0x6b0 [ 231.293085] ? update_load_avg+0x1a6/0x590 [ 231.293517] ? ttwu_do_wakeup+0x17/0x150 [ 231.293907] ? update_load_avg+0x1a6/0x590 [ 231.294317] ? newidle_balance+0xca/0x3d0 [ 231.294716] smcr_link_down+0x50/0x1a0 [ 231.295090] ? __wake_up_common_lock+0x77/0x90 [ 231.295534] smc_link_down_work+0x46/0x60 [ 231.295933] process_one_work+0x18b/0x350
CVSS Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 30, 2024 | May 24, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | May 24, 2024 |
| Suse | — | Upgrade kernel-develUpgrade kernel-devel-rtUpgrade kernel-defaultUpgrade kernel-default-extraUpgrade kernel-docsUpgrade dtb-apmUpgrade dlm-kmp-rtUpgrade ocfs2-kmp-rtUpgrade kernel-symsUpgrade ocfs2-kmp-defaultUpgrade dtb-qcomUpgrade dtb-nvidiaUpgrade dtb-rockchipUpgrade ocfs2-kmp-azureUpgrade kernel-kvmsmallUpgrade kernel-preemptUpgrade kernel-rt-livepatchUpgrade kernel-azure-develUpgrade kernel-azure-livepatch-develUpgrade dtb-exynosUpgrade kernel-debugUpgrade cluster-md-kmp-rtUpgrade kernel-default-vdsoUpgrade dtb-allwinnerUpgrade kernel-default-optionalUpgrade kernel-64kb-extraUpgrade kernel-64kb-develUpgrade dtb-mediatekUpgrade kernel-macrosUpgrade kernel-obs-qaUpgrade kselftests-kmp-rtUpgrade kernel-rt_debug-livepatch-develUpgrade dtb-sprdUpgrade kernel-syms-azureUpgrade cluster-md-kmp-64kbUpgrade dtb-xilinxUpgrade kernel-devel-azureUpgrade dtb-armUpgrade kselftests-kmp-defaultUpgrade dlm-kmp-azureUpgrade reiserfs-kmp-azureUpgrade kernel-rt-develUpgrade cluster-md-kmp-defaultUpgrade kernel-default-base-rebuildUpgrade kernel-rtUpgrade dtb-appleUpgrade dtb-freescaleUpgrade kernel-rt-vdsoUpgrade dtb-caviumUpgrade kernel-syms-rtUpgrade dtb-broadcomUpgrade kernel-sourceUpgrade kernel-preempt-develUpgrade kernel-debug-develUpgrade dtb-alteraUpgrade dtb-renesasUpgrade cluster-md-kmp-azureUpgrade kernel-debug-vdsoUpgrade ocfs2-kmp-64kbUpgrade kernel-source-rtUpgrade kernel-rt_debug-develUpgrade gfs2-kmp-defaultUpgrade dtb-amdUpgrade kselftests-kmp-64kbUpgrade kernel-64kbUpgrade kselftests-kmp-azureUpgrade dtb-hisiliconUpgrade reiserfs-kmp-rtUpgrade gfs2-kmp-rtUpgrade kernel-azure-extraUpgrade dtb-amlogicUpgrade kernel-rt-livepatch-develUpgrade kernel-rt_debugUpgrade kernel-source-azureUpgrade kernel-azure-optionalUpgrade kernel-obs-buildUpgrade kernel-default-develUpgrade reiserfs-kmp-64kbUpgrade kernel-rt-optionalUpgrade gfs2-kmp-64kbUpgrade dtb-amazonUpgrade kernel-azure-vdsoUpgrade dtb-lgUpgrade kernel-kvmsmall-livepatch-develUpgrade kernel-kvmsmall-develUpgrade kernel-zfcpdumpUpgrade kernel-debug-livepatch-develUpgrade kernel-default-livepatchUpgrade kernel-rt-extraUpgrade reiserfs-kmp-defaultUpgrade gfs2-kmp-azureUpgrade dlm-kmp-64kbUpgrade dlm-kmp-defaultUpgrade dtb-marvellUpgrade kernel-kvmsmall-vdsoUpgrade dtb-socionextUpgrade kernel-64kb-optionalUpgrade kernel-azureUpgrade kernel-rt_debug-vdsoUpgrade kernel-64kb-livepatch-develUpgrade kernel-docs-htmlUpgrade kernel-source-vanillaUpgrade kernel-default-livepatch-develUpgrade kernel-default-base | Aug 9, 2024 | May 24, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | May 24, 2024 |
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