CVE-2026-64548
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
bpf, sockmap: reject overflowing copy + len in bpf_msg_push_data()
In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: reject overflowing copy + len in bpf_msg_push_data() When the scatterlist ring is full or nearly full, bpf_msg_push_data() enters a copy fallback path and computes copy + len for the page allocation size. Since len comes from BPF with arg3_type = ARG_ANYTHING and both are u32, a crafted len can wrap the sum to a small value, causing an undersized allocation followed by an out-of-bounds memcpy. BUG: unable to handle page fault for address: ffffed104089a402 Oops: Oops: 0000 [#1] SMP KASAN NOPTI Call Trace: __asan_memcpy (mm/kasan/shadow.c:105) bpf_msg_push_data (net/core/filter.c:2852 net/core/filter.c:2788) bpf_prog_9ed8b5711920a7d7+0x2e/0x36 sk_psock_msg_verdict (net/core/skmsg.c:934) tcp_bpf_sendmsg (net/ipv4/tcp_bpf.c:421 net/ipv4/tcp_bpf.c:584) __sys_sendto (net/socket.c:2206) do_syscall_64 (arch/x86/entry/syscall_64.c:94) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) Add an overflow check before the allocation.
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) |
|---|---|---|---|---|---|
| 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 | affected | git | f1644c9508d24f50dd9e8ebe8d3ba86e0996d2f5 | Unavailable | None listed |
| 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 | affected | git | a12b1575f9feabd91695a9e9d004862f7195fa25 | Unavailable | None listed |
| 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 | affected | git | ff39d0e3b4feeb65ca43c453d7c75fdf872ded0d | Unavailable | None listed |
| 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 | affected | git | 888706a76286c547bd035432602571e8024b5305 | Unavailable | None listed |
| 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 | affected | git | db77b6bb6e6edb79b10b4efcce346eec5582d588 | Unavailable | None listed |
| 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 | affected | git | 4e40056bb5c829f0423f0a6694a0477726d2147e | Unavailable | None listed |
| 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 | affected | git | bd004716ba75fed6d185795c85cdc92540ebeaab | Unavailable | None listed |
| 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 | affected | git | 0c0a8ed85349dae298712d79cb276acfeb794d82 | 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) |
|---|---|---|---|---|---|
| 4.20 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.20 | Unavailable | None listed |
| 5.10.261 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.212 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.178 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.145 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.97 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.40 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.5 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |