CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix same-register dst/src OOB read and pointer leak in sock_ops When a BPF sock_ops program accesses ctx fields with dst_reg == src_reg, the SOCK_OPS_GET_SK() and SOCK_OPS_GET_FIELD() macros fail to zero the destination register in the !fullsock / !locked_tcp_sock path. Both macros borrow a temporary register to check is_fullsock / is_locked_tcp_sock when dst_reg == src_reg, because dst_reg holds the ctx pointer. When the check is false (e.g., TCP_NEW_SYN_RECV state with a request_sock), dst_reg should be zeroed but is not, leaving the stale ctx pointer: - SOCK_OPS_GET_SK: dst_reg retains the ctx pointer, passes NULL checks as PTR_TO_SOCKET_OR_NULL, and can be used as a bogus socket pointer, leading to stack-out-of-bounds access in helpers like bpf_skc_to_tcp6_sock(). - SOCK_OPS_GET_FIELD: dst_reg retains the ctx pointer which the verifier believes is a SCALAR_VALUE, leaking a kernel pointer. Fix both macros by: - Changing JMP_A(1) to JMP_A(2) in the fullsock path to skip the added instruction. - Adding BPF_MOV64_IMM(si->dst_reg, 0) after the temp register restore in the !fullsock path, placed after the restore because dst_reg == src_reg means we need src_reg intact to read ctx->temp.
Засегнати продукти
- Linux Linux: fd09af010788a884de1c39537c288830c3d305db преди db1200ec2c3ddf119d4d9ba67982063df06bbacb; fd09af010788a884de1c39537c288830c3d305db преди 4c1c5efd9d1d74743d41ce4e1600501b4feb6827; fd09af010788a884de1c39537c288830c3d305db преди 0e6b30657bbc771f38025c828d722b6162428508; fd09af010788a884de1c39537c288830c3d305db преди 64eaf4ecda007140ddcdb28e00c48c9c69aaba39; fd09af010788a884de1c39537c288830c3d305db преди 2a2c98141e0a75f2d4a7d78b0316c88b3da784ac; fd09af010788a884de1c39537c288830c3d305db преди 22400725de070b787cd6d806c5795370ab46d269; fd09af010788a884de1c39537c288830c3d305db преди 18e3ffde1822f0b48b1753bf34aa97ce839df1d8; fd09af010788a884de1c39537c288830c3d305db преди 10f86a2a5c91fc4c4d001960f1c21abe52545ef6; 48be3df15aa19c04eadf156c9129293c9a10389f; cd4644d904e1d153d516e73e2e127e7a2fe687e1; 6e0bc946cbeec538322820786b5fb5200a2216ab; a7e52f7f675046d9ffc5692d815fa67c82fcdbf5; db7f8c57dbdd31f7e59f8dc8d1e1b38607a320ef; 5.7.18 преди 5.8; 5.8.4 преди 5.9; 5.4.61 преди 5.5
- Linux Linux: 5.9; преди 5.9; 5.10.270 до 5.10.*; 5.15.221 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 до 6.6.*; 6.12.101 до 6.12.*; 6.18.42 до 6.18.*; 7.0.10 до 7.0.*; от 7.1 нататък
Вид слабост
История
- 24 юни 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-53078
- https://nvd.nist.gov/vuln/detail/CVE-2026-53078
- https://git.kernel.org/stable/c/db1200ec2c3ddf119d4d9ba67982063df06bbacb
- https://git.kernel.org/stable/c/4c1c5efd9d1d74743d41ce4e1600501b4feb6827
- https://git.kernel.org/stable/c/0e6b30657bbc771f38025c828d722b6162428508
- https://git.kernel.org/stable/c/64eaf4ecda007140ddcdb28e00c48c9c69aaba39
- https://git.kernel.org/stable/c/2a2c98141e0a75f2d4a7d78b0316c88b3da784ac
- https://git.kernel.org/stable/c/22400725de070b787cd6d806c5795370ab46d269
- https://git.kernel.org/stable/c/18e3ffde1822f0b48b1753bf34aa97ce839df1d8
- https://git.kernel.org/stable/c/10f86a2a5c91fc4c4d001960f1c21abe52545ef6