Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected f4f1b1169fc3694f9bc3e28c6c68dbbf4cc744c0 before b9ad8e50e8589607e68e6c4cefa7f72bf35a2cb1; affected 4c6209efea2208597dbd3e52dc87a0d1a8f2dbe1 before 1a426abdf1c86882c9203dd8182f3b8274b89938; affected 7000507bb0d2ceb545c0a690e0c707c897d102c2 before cceb15864e1612ebfbc10ec4e4dcd19a10c0056c; affected 6f45ef616775b0ce7889b0f6077fc8d681ab30bc before 584a729615fa92f4de45480efb7e569d14be1516; affected 8ca38d0ca8c3d30dd18d311f1a7ec5cb56972cac before 5300e487487d7a2e3e1e6e9d8f03ed9452e4019e; affected dd7d37ccf6b11f3d95e797ebe4e9e886d0332600 before 1c65ae4988714716101555fe2b9830e33136d6fb; affected dd7d37ccf6b11f3d95e797ebe4e9e886d0332600 before d6ebcde6d4ecf34f8495fb30516645db3aea8993; affected a54091c24220a4cd847d5b4f36d678edacddbaf0; affected 5.10.235 before 5.10.238; affected 5.15.179 before 5.15.185; affected 6.1.129 before 6.1.141; affected 6.6.76 before 6.6.93; affected 6.12.13 before 6.12.31; affected 6.13.2 before 6.14 |
| Linux / Linux | affected 6.14; unaffected 0 before 6.14; unaffected 5.10.238 through 5.10.*; unaffected 5.15.185 through 5.15.*; unaffected 6.1.141 through 6.1.*; unaffected 6.6.93 through 6.6.*; unaffected 6.12.31 through 6.12.*; unaffected 6.14.9 through 6.14.*; unaffected 6.15 through * |
CWE
No CWE identifiers supplied.
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
ADP enrichment
No English description supplied.