Description
In the Linux kernel, the following vulnerability has been resolved:
ACPI: custom_method: fix potential use-after-free issue
In cm_write(), buf is always freed when reaching the end of the function. If the requested count is less than table.length, the allocated buffer will be freed but subsequent calls to cm_write() will still try to access it.
Remove the unconditional kfree(buf) at the end of the function and set the buf to NULL in the -EINVAL error path to match the rest of function.
Metrics
CVSS 3.1 7.8/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 4bda2b79a9d04c8ba31681c66e95877dbb433416, < 1d53ca5d131074c925ce38361fb0376d3bf7e394; >= 5c12dadcbef8cd55ef1f5dac799bfcbb7ea7db1d, < 8b04d57f30caf76649d0567551589af9a66ca9be; >= 35b88a10535edcf62d3e6b7893a8cd506ff98a24, < 90575d1d9311b753cf1718f4ce9061ddda7dfd23; >= e4467fb6ef547aa352dc03397f9474ec84eced5b, < a5b26a2e362f572d87e9fd35435680e557052a17; >= 03d1571d9513369c17e6848476763ebbd10ec2cb, < 72814a94c38a33239793f7622cec6ace1e540c4b; >= 03d1571d9513369c17e6848476763ebbd10ec2cb, < 62dc2440ebb552aa0d7f635e1697e077d9d21203; >= 03d1571d9513369c17e6848476763ebbd10ec2cb, < f16737caf41fc06cfe6e49048becb09657074d4b; >= 03d1571d9513369c17e6848476763ebbd10ec2cb, < b7a5baaae212a686ceb812c32fceed79c03c0234; >= 03d1571d9513369c17e6848476763ebbd10ec2cb, < e483bb9a991bdae29a0caa4b3a6d002c968f94aa; 70424999fbf1f160ade111cb9baab51776e0f9c2; 06cd4a06eb596a888239fb8ceb6ea15677cab396; >= 4.4.195, < 4.4.269; >= 4.9.195, < 4.9.269; >= 4.14.147, < 4.14.233; >= 4.19.77, < 4.19.191; >= 5.2.19, < 5.3; >= 5.3.4, < 5.4 |
| Linux | Linux | 5.4 |
References
- https://git.kernel.org/stable/c/1d53ca5d131074c925ce38361fb0376d3bf7e394Patch
- https://git.kernel.org/stable/c/62dc2440ebb552aa0d7f635e1697e077d9d21203Patch
- https://git.kernel.org/stable/c/72814a94c38a33239793f7622cec6ace1e540c4bPatch
- https://git.kernel.org/stable/c/8b04d57f30caf76649d0567551589af9a66ca9bePatch
- https://git.kernel.org/stable/c/90575d1d9311b753cf1718f4ce9061ddda7dfd23Patch
- https://git.kernel.org/stable/c/a5b26a2e362f572d87e9fd35435680e557052a17Patch
- https://git.kernel.org/stable/c/b7a5baaae212a686ceb812c32fceed79c03c0234Patch
- https://git.kernel.org/stable/c/e483bb9a991bdae29a0caa4b3a6d002c968f94aaPatch
- https://git.kernel.org/stable/c/f16737caf41fc06cfe6e49048becb09657074d4bPatch
- https://git.kernel.org/stable/c/1d53ca5d131074c925ce38361fb0376d3bf7e394Patch
- https://git.kernel.org/stable/c/62dc2440ebb552aa0d7f635e1697e077d9d21203Patch
- https://git.kernel.org/stable/c/72814a94c38a33239793f7622cec6ace1e540c4bPatch
- https://git.kernel.org/stable/c/8b04d57f30caf76649d0567551589af9a66ca9bePatch
- https://git.kernel.org/stable/c/90575d1d9311b753cf1718f4ce9061ddda7dfd23Patch
- https://git.kernel.org/stable/c/a5b26a2e362f572d87e9fd35435680e557052a17Patch
- https://git.kernel.org/stable/c/b7a5baaae212a686ceb812c32fceed79c03c0234Patch
- https://git.kernel.org/stable/c/e483bb9a991bdae29a0caa4b3a6d002c968f94aaPatch
- https://git.kernel.org/stable/c/f16737caf41fc06cfe6e49048becb09657074d4bPatch
Timeline
- Published
- Feb 27, 2024
- Last modified
- Jun 17, 2026
- NVD status
- Analyzed