# CVE-2022-49062: linux: In the Linux kernel, the following vulnerability has been resolved:  cachefiles: Fix KASAN slab-out-of-bounds in cach...

CVE-2022-49062 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49062, released February 26, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-49062
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0026
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 26, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  cachefiles: Fix KASAN slab-out-of-bounds in cachefiles_set_volume_xattr  Use the actual length of volume coherency data when setting the xattr to avoid the following KASAN report.   BUG: KASAN: slab-out-of-bounds in cachefiles_set_volume_xattr+0xa0/0x350 [cachefiles]  Write of size 4 at addr ffff888101e02af4 by task kworker/6:0/1347   CPU: 6 PID: 1347 Comm: kworker/6:0 Kdump: loaded Not tainted 5.18.0-rc1-nfs-fscache-netfs+ #13  Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-4.fc34 04/01/2014  Workqueue: events fscache_create_volume_work [fscache]  Call Trace:   <TASK>   dump_stack_lvl+0x45/0x5a   print_report.cold+0x5e/0x5db   ? __lock_text_start+0x8/0x8   ? cachefiles_set_volume_xattr+0xa0/0x350 [cachefiles]   kasan_report+0xab/0x120   ? cachefiles_set_volume_xattr+0xa0/0x350 [cachefiles]   kasan_check_range+0xf5/0x1d0   memcpy+0x39/0x60   cachefiles_set_volume_xattr+0xa0/0x350 [cachefiles]   cachefiles_acquire_volume+0x2be/0x500 [cachefiles]   ? __cachefiles_free_volume+0x90/0x90 [cachefiles]   fscache_create_volume_work+0x68/0x160 [fscache]   process_one_work+0x3b7/0x6a0   worker_thread+0x2c4/0x650   ? process_one_work+0x6a0/0x6a0   kthread+0x16c/0x1a0   ? kthread_complete_and_exit+0x20/0x20   ret_from_fork+0x22/0x30   </TASK>   Allocated by task 1347:   kasan_save_stack+0x1e/0x40   __kasan_kmalloc+0x81/0xa0   cachefiles_set_volume_xattr+0x76/0x350 [cachefiles]   cachefiles_acquire_volume+0x2be/0x500 [cachefiles]   fscache_create_volume_work+0x68/0x160 [fscache]   process_one_work+0x3b7/0x6a0   worker_thread+0x2c4/0x650   kthread+0x16c/0x1a0   ret_from_fork+0x22/0x30   The buggy address belongs to the object at ffff888101e02af0  which belongs to the cache kmalloc-8 of size 8  The buggy address is located 4 bytes inside of  8-byte region [ffff888101e02af0, ffff888101e02af8)   The buggy address belongs to the physical page:  page:00000000a2292d70 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101e02  flags: 0x17ffffc0000200(slab|node=0|zone=2|lastcpupid=0x1fffff)  raw: 0017ffffc0000200 0000000000000000 dead000000000001 ffff888100042280  raw: 0000000000000000 0000000080660066 00000001ffffffff 0000000000000000  page dumped because: kasan: bad access detected   Memory state around the buggy address:  ffff888101e02980: fc 00 fc fc fc fc 00 fc fc fc fc 00 fc fc fc fc  ffff888101e02a00: 00 fc fc fc fc 00 fc fc fc fc 00 fc fc fc fc 00  >ffff888101e02a80: fc fc fc fc 00 fc fc fc fc 00 fc fc fc fc 04 fc                                                             ^  ffff888101e02b00: fc fc fc 00 fc fc fc fc 00 fc fc fc fc 00 fc fc  ffff888101e02b80: fc fc 00 fc fc fc fc 00 fc fc fc fc 00 fc fc fc  ==================================================================

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.17.6-1 | [DEBIAN-CVE-2022-49062](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49062.md) | Feb 26, 2025 |
| Linux | linux Debian 13.5 (trixie) | 5.17.6-1 | [DEBIAN-CVE-2022-49062](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49062.md) | Feb 26, 2025 |
| Linux | linux Debian 14 | 5.17.6-1 | [DEBIAN-CVE-2022-49062](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49062.md) | Feb 26, 2025 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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