CVE-2024-39474
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-39474
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-39474.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-39474
- Downstream
- Related
- Published
- 2024-07-05T06:55:05Z
- Modified
- 2025-10-17T08:36:02.919050Z
- Summary
- mm/vmalloc: fix vmalloc which may return null if called with __GFP_NOFAIL
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
mm/vmalloc: fix vmalloc which may return null if called with _GFPNOFAIL
commit a421ef303008 ("mm: allow !GFPKERNEL allocations for kvmalloc") includes support for _GFP_NOFAIL, but it presents a conflict with commit dd544141b9eb ("vmalloc: back off when the current task is OOM-killed"). A possible scenario is as follows:
process-a _vmallocnoderange(GFPKERNEL | _GFPNOFAIL) _vmallocareanode() vmareaallocpages() --> oom-killer send SIGKILL to process-a if (fatalsignalpending(current)) break; --> return NULL;
To fix this, do not check fatalsignalpending() in vmareaallocpages() if _GFP_NOFAIL set.
This issue occurred during OPLUS KASAN TEST. Below is part of the log -> oom-killer sends signal to process [65731.222840] [ T1308] oom-kill:constraint=CONSTRAINTNONE,nodemask=(null),cpuset=/,memsallowed=0,globaloom,taskmemcg=/apps/uid_10198,task=gs.intelligence,pid=32454,uid=10198
[65731.259685] [T32454] Call trace: [65731.259698] [T32454] dumpbacktrace+0xf4/0x118 [65731.259734] [T32454] showstack+0x18/0x24 [65731.259756] [T32454] dumpstacklvl+0x60/0x7c [65731.259781] [T32454] dumpstack+0x18/0x38 [65731.259800] [T32454] mrdumpcommondie+0x250/0x39c [mrdump] [65731.259936] [T32454] ipanicdie+0x20/0x34 [mrdump] [65731.260019] [T32454] atomicnotifiercallchain+0xb4/0xfc [65731.260047] [T32454] notifydie+0x114/0x198 [65731.260073] [T32454] die+0xf4/0x5b4 [65731.260098] [T32454] diekernelfault+0x80/0x98 [65731.260124] [T32454] _dokernelfault+0x160/0x2a8 [65731.260146] [T32454] dobadarea+0x68/0x148 [65731.260174] [T32454] domemabort+0x151c/0x1b34 [65731.260204] [T32454] el1abort+0x3c/0x5c [65731.260227] [T32454] el1h64synchandler+0x54/0x90 [65731.260248] [T32454] el1h64_sync+0x68/0x6c
[65731.260269] [T32454] zerofsdecompressqueue+0x7f0/0x2258 --> be->decompressedpages = kvcalloc(be->nrpages, sizeof(struct page *), GFPKERNEL | _GFPNOFAIL); kernel panic by NULL pointer dereference. erofs assume kvmalloc with _GFPNOFAIL never return NULL. [65731.260293] [T32454] zerofsrunqueue+0xf30/0x104c [65731.260314] [T32454] zerofsreadahead+0x4f0/0x968 [65731.260339] [T32454] readpages+0x170/0xadc [65731.260364] [T32454] pagecacheraunbounded+0x874/0xf30 [65731.260388] [T32454] pagecacheraorder+0x24c/0x714 [65731.260411] [T32454] filemapfault+0xbf0/0x1a74 [65731.260437] [T32454] _dofault+0xd0/0x33c [65731.260462] [T32454] handlemmfault+0xf74/0x3fe0 [65731.260486] [T32454] domemabort+0x54c/0x1b34 [65731.260509] [T32454] el0da+0x44/0x94 [65731.260531] [T32454] el0t64synchandler+0x98/0xb4 [65731.260553] [T32454] el0t64sync+0x198/0x19c
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/198a80833e3421d4c9820a4ae907120adf598c91
- https://git.kernel.org/stable/c/758678b65164b2158fc1de411092191cb3c394d4
- https://git.kernel.org/stable/c/8e0545c83d672750632f46e3f9ad95c48c91a0fc
- https://git.kernel.org/stable/c/c55d3564ad25ce87ab7cc6af251f9574faebd8da
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced9376130c390a76fac2788a5d6e1a149017b4ab50Fixed198a80833e3421d4c9820a4ae907120adf598c91
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced9376130c390a76fac2788a5d6e1a149017b4ab50Fixedc55d3564ad25ce87ab7cc6af251f9574faebd8da
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced9376130c390a76fac2788a5d6e1a149017b4ab50Fixed758678b65164b2158fc1de411092191cb3c394d4
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced9376130c390a76fac2788a5d6e1a149017b4ab50Fixed8e0545c83d672750632f46e3f9ad95c48c91a0fc