CVE-2022-49277
jffs2: fix memory leak in jffs2_do_mount_fs
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: jffs2: fix memory leak in jffs2_do_mount_fs If jffs2_build_filesystem() in jffs2_do_mount_fs() returns an error, we can observe the following kmemleak report: -------------------------------------------- unreferenced object 0xffff88811b25a640 (size 64): comm "mount", pid 691, jiffies 4294957728 (age 71.952s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 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: [<ffffffffa493be24>] kmem_cache_alloc_trace+0x584/0x880 [<ffffffffa5423a06>] jffs2_sum_init+0x86/0x130 [<ffffffffa5400e58>] jffs2_do_mount_fs+0x798/0xac0 [<ffffffffa540acf3>] jffs2_do_fill_super+0x383/0xc30 [<ffffffffa540c00a>] jffs2_fill_super+0x2ea/0x4c0 [...] unreferenced object 0xffff88812c760000 (size 65536): comm "mount", pid 691, jiffies 4294957728 (age 71.952s) hex dump (first 32 bytes): bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................ bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................ backtrace: [<ffffffffa493a449>] __kmalloc+0x6b9/0x910 [<ffffffffa5423a57>] jffs2_sum_init+0xd7/0x130 [<ffffffffa5400e58>] jffs2_do_mount_fs+0x798/0xac0 [<ffffffffa540acf3>] jffs2_do_fill_super+0x383/0xc30 [<ffffffffa540c00a>] jffs2_fill_super+0x2ea/0x4c0 [...] -------------------------------------------- This is because the resources allocated in jffs2_sum_init() are not released. Call jffs2_sum_exit() to release these resources to solve the problem.
Timeline
ID reserved
By Linux
Published
- 15 months later
· 15 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
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)
- 0.28% · top 80% 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 e631ddba588783edd521c5a89f7b2902772fb691 – < 2a9d8184458562e6bf2f40d0e677fc85e2dd3834
- affected e631ddba588783edd521c5a89f7b2902772fb691 – < 9a0f6610c7daedd2eace430beeb08a8b7ac80699
- affected e631ddba588783edd521c5a89f7b2902772fb691 – < dbe0d0521eaa6a3d235517319266c539bb5c5112
- affected e631ddba588783edd521c5a89f7b2902772fb691 – < 0978e9af4559a171ac7a74a1b3ef21804b0a0fa9
- affected e631ddba588783edd521c5a89f7b2902772fb691 – < 607d3aab7349f18e0d9dba4100d09d16fe27caca
- affected e631ddba588783edd521c5a89f7b2902772fb691 – < 4392e8aeebc5a4f8073620bccba7de1b1f6d7c88
- affected e631ddba588783edd521c5a89f7b2902772fb691 – < 5f34310d1376ca5b2ed798258def2c2ab3cc6699
- affected e631ddba588783edd521c5a89f7b2902772fb691 – < c94128470e6fe53d9bd9d16d2d3271813f9d37af
- affected e631ddba588783edd521c5a89f7b2902772fb691 – < d051cef784de4d54835f6b6836d98a8f6935772c
- affected 2.6.15
- unaffected < 2.6.15
- unaffected 4.9.311 – ≤ 4.9.*
- unaffected 4.14.276 – ≤ 4.14.*
- unaffected 4.19.238 – ≤ 4.19.*
- unaffected 5.4.189 – ≤ 5.4.*
- 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 (9)
- https://git.kernel.org/stable/c/2a9d8184458562e6bf2f40d0e677fc85e2dd3834 (opens in a new tab)
- https://git.kernel.org/stable/c/9a0f6610c7daedd2eace430beeb08a8b7ac80699 (opens in a new tab)
- https://git.kernel.org/stable/c/dbe0d0521eaa6a3d235517319266c539bb5c5112 (opens in a new tab)
- https://git.kernel.org/stable/c/0978e9af4559a171ac7a74a1b3ef21804b0a0fa9 (opens in a new tab)
- https://git.kernel.org/stable/c/607d3aab7349f18e0d9dba4100d09d16fe27caca (opens in a new tab)
- https://git.kernel.org/stable/c/4392e8aeebc5a4f8073620bccba7de1b1f6d7c88 (opens in a new tab)
- https://git.kernel.org/stable/c/5f34310d1376ca5b2ed798258def2c2ab3cc6699 (opens in a new tab)
- https://git.kernel.org/stable/c/c94128470e6fe53d9bd9d16d2d3271813f9d37af (opens in a new tab)
- https://git.kernel.org/stable/c/d051cef784de4d54835f6b6836d98a8f6935772c (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-2022-49277)Record last updated .