CVE-2024-46740binder: fix UAF caused by offsets overwrite
- 7.8HighCVSS base score
- 0.29%Exploitation in 30 daysEPSS · top 78% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: binder: fix UAF caused by offsets overwrite Binder objects are processed and copied individually into the target buffer during transactions. Any raw data in-between these objects is copied as well. However, this raw data copy lacks an out-of-bounds check. If the raw data exceeds the data section size then the copy overwrites the offsets section. This eventually triggers an error that attempts to unwind the processed objects. However, at this point the offsets used to index these objects are now corrupted. Unwinding with corrupted offsets can result in decrements of arbitrary nodes and lead to their premature release. Other users of such nodes are left with a dangling pointer triggering a use-after-free. This issue is made evident by the following KASAN report (trimmed): ================================================================== BUG: KASAN: slab-use-after-free in _raw_spin_lock+0xe4/0x19c Write of size 4 at addr ffff47fc91598f04 by task binder-util/743 CPU: 9 UID: 0 PID: 743 Comm: binder-util Not tainted 6.11.0-rc4 #1 Hardware name: linux,dummy-virt (DT) Call trace: _raw_spin_lock+0xe4/0x19c binder_free_buf+0x128/0x434 binder_thread_write+0x8a4/0x3260 binder_ioctl+0x18f0/0x258c [...] Allocated by task 743: __kmalloc_cache_noprof+0x110/0x270 binder_new_node+0x50/0x700 binder_transaction+0x413c/0x6da8 binder_thread_write+0x978/0x3260 binder_ioctl+0x18f0/0x258c [...] Freed by task 745: kfree+0xbc/0x208 binder_thread_read+0x1c5c/0x37d4 binder_ioctl+0x16d8/0x258c [...] ================================================================== To avoid this issue, let's check that the raw data copy is within the boundaries of the data section.
Timeline
ID reserved
By Linux
- 7 days later
· 7 days later
Published
- 23 months later
· 23 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 |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CISA-ADPADP (enrichment) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.29% · top 78% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected c056a6ba35e00ae943e377eb09abd77a6915b31a – < 5a32bfd23022ffa7e152f273fa3fa29befb7d929
- affected 23e9d815fad84c1bee3742a8de4bd39510435362 – < 3a8154bb4ab4a01390a3abf1e6afac296e037da4
- affected 7a9ad4aceb0226b391c9d3b8e4ac2e7d438b6bde – < eef79854a04feac5b861f94d7b19cbbe79874117
- affected 6d98eb95b450a75adb4516a1d33652dc78d2b20c – < 4f79e0b80dc69bd5eaaed70f0df1b558728b4e59
- affected 6d98eb95b450a75adb4516a1d33652dc78d2b20c – < 1f33d9f1d9ac3f0129f8508925000900c2fe5bb0
- affected 6d98eb95b450a75adb4516a1d33652dc78d2b20c – < 109e845c1184c9f786d41516348ba3efd9112792
- affected 6d98eb95b450a75adb4516a1d33652dc78d2b20c – < 4df153652cc46545722879415937582028c18af5
- affected 66e12f5b3a9733f941893a00753b10498724607d
- affected 5.4.226 – < 5.4.284
- affected 5.10.157 – < 5.10.226
- affected 5.15.17 – < 5.15.167
- affected 5.16.3 – < 5.17
- affected 5.17
- unaffected < 5.17
- unaffected 5.4.284 – ≤ 5.4.*
- unaffected 5.10.226 – ≤ 5.10.*
- unaffected 5.15.167 – ≤ 5.15.*
- unaffected 6.1.110 – ≤ 6.1.*
- unaffected 6.6.51 – ≤ 6.6.*
- unaffected 6.10.10 – ≤ 6.10.*
- unaffected 6.11 – ≤ *
References
References9
- https://git.kernel.org/stable/c/5a32bfd23022ffa7e152f273fa3fa29befb7d929 (opens in a new tab)
- https://git.kernel.org/stable/c/3a8154bb4ab4a01390a3abf1e6afac296e037da4 (opens in a new tab)
- https://git.kernel.org/stable/c/eef79854a04feac5b861f94d7b19cbbe79874117 (opens in a new tab)
- https://git.kernel.org/stable/c/4f79e0b80dc69bd5eaaed70f0df1b558728b4e59 (opens in a new tab)
- https://git.kernel.org/stable/c/1f33d9f1d9ac3f0129f8508925000900c2fe5bb0 (opens in a new tab)
- https://git.kernel.org/stable/c/109e845c1184c9f786d41516348ba3efd9112792 (opens in a new tab)
- https://git.kernel.org/stable/c/4df153652cc46545722879415937582028c18af5 (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html (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)
- EUVD EUVD-2024-42001 (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://cveledger.app/cve/CVE-2024-46740)Record last updated .