CVE-2022-49381
jffs2: fix memory leak in jffs2_do_fill_super
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: jffs2: fix memory leak in jffs2_do_fill_super If jffs2_iget() or d_make_root() in jffs2_do_fill_super() returns an error, we can observe the following kmemleak report: -------------------------------------------- unreferenced object 0xffff888105a65340 (size 64): comm "mount", pid 710, jiffies 4302851558 (age 58.239s) 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: [<ffffffff859c45e5>] kmem_cache_alloc_trace+0x475/0x8a0 [<ffffffff86160146>] jffs2_sum_init+0x96/0x1a0 [<ffffffff86140e25>] jffs2_do_mount_fs+0x745/0x2120 [<ffffffff86149fec>] jffs2_do_fill_super+0x35c/0x810 [<ffffffff8614aae9>] jffs2_fill_super+0x2b9/0x3b0 [...] unreferenced object 0xffff8881bd7f0000 (size 65536): comm "mount", pid 710, jiffies 4302851558 (age 58.239s) 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: [<ffffffff858579ba>] kmalloc_order+0xda/0x110 [<ffffffff85857a11>] kmalloc_order_trace+0x21/0x130 [<ffffffff859c2ed1>] __kmalloc+0x711/0x8a0 [<ffffffff86160189>] jffs2_sum_init+0xd9/0x1a0 [<ffffffff86140e25>] jffs2_do_mount_fs+0x745/0x2120 [<ffffffff86149fec>] jffs2_do_fill_super+0x35c/0x810 [<ffffffff8614aae9>] jffs2_fill_super+0x2b9/0x3b0 [...] -------------------------------------------- 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.
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)
- 0.27% · top 81% 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 – < 4ba7bbeab8009faf3a726e565d98816593ddd5b0
- affected e631ddba588783edd521c5a89f7b2902772fb691 – < 4da8763a3d2b684c773b72ed80fad40bc264bc40
- affected e631ddba588783edd521c5a89f7b2902772fb691 – < 28048a4cf3813b7cf5cc8cce629dfdc7951cb1c2
- affected e631ddba588783edd521c5a89f7b2902772fb691 – < d3a4fff1e7e408c32649030daa7c2c42a7e19a95
- affected e631ddba588783edd521c5a89f7b2902772fb691 – < 3252d327f977b14663a10967f3b0930d6c325687
- affected e631ddba588783edd521c5a89f7b2902772fb691 – < ecc53e58596542791e82eff00702f8af7a313f70
- affected e631ddba588783edd521c5a89f7b2902772fb691 – < cf9db013e167bc8fc2ecd7a13ed97a37df0c9dab
- affected e631ddba588783edd521c5a89f7b2902772fb691 – < 69295267c481545f636b69ff341b8db75aa136b9
- affected e631ddba588783edd521c5a89f7b2902772fb691 – < c14adb1cf70a984ed081c67e9d27bc3caad9537c
- affected 2.6.15
- unaffected < 2.6.15
- unaffected 4.9.318 – ≤ 4.9.*
- unaffected 4.14.283 – ≤ 4.14.*
- unaffected 4.19.247 – ≤ 4.19.*
- unaffected 5.4.198 – ≤ 5.4.*
- unaffected 5.10.122 – ≤ 5.10.*
- unaffected 5.15.47 – ≤ 5.15.*
- unaffected 5.17.15 – ≤ 5.17.*
- unaffected 5.18.4 – ≤ 5.18.*
- unaffected 5.19 – ≤ *
References (9)
- https://git.kernel.org/stable/c/4ba7bbeab8009faf3a726e565d98816593ddd5b0 (opens in a new tab)
- https://git.kernel.org/stable/c/4da8763a3d2b684c773b72ed80fad40bc264bc40 (opens in a new tab)
- https://git.kernel.org/stable/c/28048a4cf3813b7cf5cc8cce629dfdc7951cb1c2 (opens in a new tab)
- https://git.kernel.org/stable/c/d3a4fff1e7e408c32649030daa7c2c42a7e19a95 (opens in a new tab)
- https://git.kernel.org/stable/c/3252d327f977b14663a10967f3b0930d6c325687 (opens in a new tab)
- https://git.kernel.org/stable/c/ecc53e58596542791e82eff00702f8af7a313f70 (opens in a new tab)
- https://git.kernel.org/stable/c/cf9db013e167bc8fc2ecd7a13ed97a37df0c9dab (opens in a new tab)
- https://git.kernel.org/stable/c/69295267c481545f636b69ff341b8db75aa136b9 (opens in a new tab)
- https://git.kernel.org/stable/c/c14adb1cf70a984ed081c67e9d27bc3caad9537c (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-2022-49381)Record last updated .