CVE-2022-49148
watch_queue: Free the page array when watch_queue is dismantled
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: watch_queue: Free the page array when watch_queue is dismantled Commit 7ea1a0124b6d ("watch_queue: Free the alloc bitmap when the watch_queue is torn down") took care of the bitmap, but not the page array. BUG: memory leak unreferenced object 0xffff88810d9bc140 (size 32): comm "syz-executor335", pid 3603, jiffies 4294946994 (age 12.840s) hex dump (first 32 bytes): 40 a7 40 04 00 ea ff ff 00 00 00 00 00 00 00 00 @.@............. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: kmalloc_array include/linux/slab.h:621 [inline] kcalloc include/linux/slab.h:652 [inline] watch_queue_set_size+0x12f/0x2e0 kernel/watch_queue.c:251 pipe_ioctl+0x82/0x140 fs/pipe.c:632 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.26% · top 82% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
- affected c73be61cede5882f9605a852414db559c0ebedfd – < 7169f60110915c8b53bffd43741fa020a75eb87a
- affected c73be61cede5882f9605a852414db559c0ebedfd – < 4913daecd04addb41bc96a9175a885e1c19862a8
- affected c73be61cede5882f9605a852414db559c0ebedfd – < 3963a5d1ff75585bddf0c3a918566a6be09d7520
- affected c73be61cede5882f9605a852414db559c0ebedfd – < 375cd2536494cfbcdda84ae8b3e35bf19d0250b9
- affected c73be61cede5882f9605a852414db559c0ebedfd – < b490207017ba237d97b735b2aa66dc241ccd18f5
- affected 5.8
- unaffected < 5.8
- unaffected 5.10.110 – ≤ 5.10.*
- unaffected 5.15.33 – ≤ 5.15.*
- unaffected 5.16.19 – ≤ 5.16.*
- unaffected 5.17.2 – ≤ 5.17.*
- unaffected 5.18 – ≤ *
References (5)
- https://git.kernel.org/stable/c/7169f60110915c8b53bffd43741fa020a75eb87a (opens in a new tab)
- https://git.kernel.org/stable/c/4913daecd04addb41bc96a9175a885e1c19862a8 (opens in a new tab)
- https://git.kernel.org/stable/c/3963a5d1ff75585bddf0c3a918566a6be09d7520 (opens in a new tab)
- https://git.kernel.org/stable/c/375cd2536494cfbcdda84ae8b3e35bf19d0250b9 (opens in a new tab)
- https://git.kernel.org/stable/c/b490207017ba237d97b735b2aa66dc241ccd18f5 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-49148)Record last updated .