CVE-2023-52566
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
nilfs2: fix potential use after free in nilfs_gccache_submit_read_data()
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix potential use after free in nilfs_gccache_submit_read_data() In nilfs_gccache_submit_read_data(), brelse(bh) is called to drop the reference count of bh when the call to nilfs_dat_translate() fails. If the reference count hits 0 and its owner page gets unlocked, bh may be freed. However, bh->b_page is dereferenced to put the page after that, which may result in a use-after-free bug. This patch moves the release operation after unlocking and putting the page. NOTE: The function in question is only called in GC, and in combination with current userland tools, address translation using DAT does not occur in that function, so the code path that causes this issue will not be executed. However, it is possible to run that code path by intentionally modifying the userland GC library or by calling the GC ioctl directly. [konishi.ryusuke@gmail.com: NOTE added to the commit log]
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| a3d93f709e893187d301aa5458b2248db9f22bd1 | affected | git | fb1084e63ee56958b0a56e17a50a4fd86445b9c1 | Unavailable | None listed |
| a3d93f709e893187d301aa5458b2248db9f22bd1 | affected | git | bb61224f6abc8e71bfdf06d7c984e23460875f5b | Unavailable | None listed |
| a3d93f709e893187d301aa5458b2248db9f22bd1 | affected | git | 193b5a1c6c67c36b430989dc063fe7ea4e200a33 | Unavailable | None listed |
| a3d93f709e893187d301aa5458b2248db9f22bd1 | affected | git | 7130a87ca32396eb9bf48b71a2d42259ae44c6c7 | Unavailable | None listed |
| a3d93f709e893187d301aa5458b2248db9f22bd1 | affected | git | 3936e8714907cd55e37c7cc50e50229e4a9042e8 | Unavailable | None listed |
| a3d93f709e893187d301aa5458b2248db9f22bd1 | affected | git | 980663f1d189eedafd18d80053d9cf3e2ceb5c8c | Unavailable | None listed |
| a3d93f709e893187d301aa5458b2248db9f22bd1 | affected | git | 28df4646ad8b433340772edc90ca709cdefc53e2 | Unavailable | None listed |
| a3d93f709e893187d301aa5458b2248db9f22bd1 | affected | git | 7ee29facd8a9c5a26079148e36bcf07141b3a6bc | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.6.30 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.30 | Unavailable | None listed |
| 4.14.327 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.296 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.258 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.198 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.134 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.56 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.5.6 | unaffected | semver | Unavailable | 6.5.* | None listed |
| 6.6 | unaffected | original_commit_for_fix | Unavailable | * | None listed |