CVE-2025-38031
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
padata: do not leak refcount in reorder_work
A recent patch that addressed a UAF introduced a reference count leak: the parallel_data refcount is incremented unconditionally, regardless of the return value of queue_work(). If the work item is already queued, the incremented refcount is never decremented.
Fix this by checking the return value of queue_work() and decrementing the refcount when necessary.
Resolves:
Unreferenced object 0xffff9d9f421e3d80 (size 192): comm "cryptomgr_probe", pid 157, jiffies 4294694003 hex dump (first 32 bytes): 80 8b cf 41 9f 9d ff ff b8 97 e0 89 ff ff ff ff …A………… d0 97 e0 89 ff ff ff ff 19 00 00 00 1f 88 23 00 …………..#. backtrace (crc 838fb36): __kmalloc_cache_noprof+0x284/0x320 padata_alloc_pd+0x20/0x1e0 padata_alloc_shell+0x3b/0xa0 0xffffffffc040a54d cryptomgr_probe+0x43/0xc0 kthread+0xf6/0x1f0 ret_from_fork+0x2f/0x50 ret_from_fork_asm+0x1a/0x30
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | f4f1b1169fc3694f9bc3e28c6c68dbbf4cc744c0 < b9ad8e50e8589607e68e6c4cefa7f72bf35a2cb1 | affected |
| Linux | Linux | 4c6209efea2208597dbd3e52dc87a0d1a8f2dbe1 < 1a426abdf1c86882c9203dd8182f3b8274b89938 | affected |
| Linux | Linux | 7000507bb0d2ceb545c0a690e0c707c897d102c2 < cceb15864e1612ebfbc10ec4e4dcd19a10c0056c | affected |
| Linux | Linux | 6f45ef616775b0ce7889b0f6077fc8d681ab30bc < 584a729615fa92f4de45480efb7e569d14be1516 | affected |
| Linux | Linux | 8ca38d0ca8c3d30dd18d311f1a7ec5cb56972cac < 5300e487487d7a2e3e1e6e9d8f03ed9452e4019e | affected |
| Linux | Linux | dd7d37ccf6b11f3d95e797ebe4e9e886d0332600 < 1c65ae4988714716101555fe2b9830e33136d6fb | affected |
| Linux | Linux | dd7d37ccf6b11f3d95e797ebe4e9e886d0332600 < d6ebcde6d4ecf34f8495fb30516645db3aea8993 | affected |
| Linux | Linux | a54091c24220a4cd847d5b4f36d678edacddbaf0 | affected |
| Linux | Linux | 5.10.235 < 5.10.238 | affected |
| Linux | Linux | 5.15.179 < 5.15.185 | affected |
| Linux | Linux | 6.1.129 < 6.1.141 | affected |
| Linux | Linux | 6.6.76 < 6.6.93 | affected |
| Linux | Linux | 6.12.13 < 6.12.31 | affected |
| Linux | Linux | 6.13.2 < 6.14 | affected |
| Linux | Linux | 6.14 | affected |
| Linux | Linux | 0 < 6.14 | unaffected |
| Linux | Linux | 5.10.238 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.185 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.141 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.93 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.31 <= 6.12.* | unaffected |
| Linux | Linux | 6.14.9 <= 6.14.* | unaffected |
| Linux | Linux | 6.15 <= * | unaffected |
Weaknesses
ADP Enrichment
CVE Program Container
Additional References
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
References
- https://git.kernel.org/stable/c/b9ad8e50e8589607e68e6c4cefa7f72bf35a2cb1
- https://git.kernel.org/stable/c/1a426abdf1c86882c9203dd8182f3b8274b89938
- https://git.kernel.org/stable/c/cceb15864e1612ebfbc10ec4e4dcd19a10c0056c
- https://git.kernel.org/stable/c/584a729615fa92f4de45480efb7e569d14be1516
- https://git.kernel.org/stable/c/5300e487487d7a2e3e1e6e9d8f03ed9452e4019e
- https://git.kernel.org/stable/c/1c65ae4988714716101555fe2b9830e33136d6fb
- https://git.kernel.org/stable/c/d6ebcde6d4ecf34f8495fb30516645db3aea8993
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