CVE-2022-49925

RDMA/core: Fix null-ptr-deref in ib_core_cleanup()

MEDIUM

5.5

CVSS Score

Published: May 1, 2025 at 02:11 PM UTC

Updated: June 17, 2026 at 05:19 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Fix null-ptr-deref in ib_core_cleanup() KASAN reported a null-ptr-deref error: KASAN: null-ptr-deref in range [0x0000000000000118-0x000000000000011f] CPU: 1 PID: 379 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) RIP: 0010:destroy_workqueue+0x2f/0x740 RSP: 0018:ffff888016137df8 EFLAGS: 00000202 ... Call Trace: ib_core_cleanup+0xa/0xa1 [ib_core] __do_sys_delete_module.constprop.0+0x34f/0x5b0 do_syscall_64+0x3a/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fa1a0d221b7 ... It is because the fail of roce_gid_mgmt_init() is ignored: ib_core_init() roce_gid_mgmt_init() gid_cache_wq = alloc_ordered_workqueue # fail ... ib_core_cleanup() roce_gid_mgmt_cleanup() destroy_workqueue(gid_cache_wq) # destroy an unallocated wq Fix this by catching the fail of roce_gid_mgmt_init() in ib_core_init().

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.3 ≤ v < 5.10.1544.3 ≤ v < 5.15.784.3 ≤ v < 5.4.2244.3 ≤ v < 6.0.84.3 ≤ v < 6.15.11 ≤ v < 5.15.785.16 ≤ v < 6.0.85.5 ≤ v < 5.10.1543db3a2d81e6e84f3ed3cb9e87cae17d762642b6.1 rc1 6.1 rc2 6.1 rc3

Vendor states this is fixed in 07c0d131cc0fe1f3981a42958fc52d573d303d89 (fixed)

Vendor states this is fixed in 6b3d5dcb12347f3518308c2c9d2cf72453a3e1e5 (fixed)

Vendor states this is fixed in ab817f75e5e0fa58d9be0825da6a7b7d8a1fa1d9 (fixed)

Vendor states this is fixed in af8fb5a0600e9ae29950e9422a032c3c22649ee5 (fixed)

Vendor states this is fixed in d360e875c011a005628525bf290322058927e7dc (fixed)

Vendor states this is fixed in 4.3 (unaffected)

Vendor states this is fixed in 5.10.154 (unaffected)

Vendor states this is fixed in 5.15.78 (unaffected)

Vendor states this is fixed in 5.4.224 (unaffected)

Vendor states this is fixed in 6.0.8 (unaffected)

Vendor states this is fixed in 6.1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references