CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, без 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: virtio-net: fix len check in receive_big() receive_big() bounds the device-announced length by (big_packets_num_skbfrags + 1) * PAGE_SIZE. That is still too loose: add_recvbuf_big() sets sg[1] to start at offset sizeof(struct padded_vnet_hdr) into the first page, so the chain actually carries hdr_len + (PAGE_SIZE - sizeof(padded_vnet_hdr)) + big_packets_num_skbfrags * PAGE_SIZE bytes -- 20 bytes less than the check allows for the common hdr_len == 12 case. A malicious virtio backend can announce a len in that gap. page_to_skb() then walks one frag past the page chain, storing a NULL page->private into skb_shinfo()->frags[MAX_SKB_FRAGS], which is both an out-of-bounds write past the static frag array and a NULL frag handed up the rx path. Bound len by the size add_recvbuf_big() actually advertised.
Засегнати продукти
- Linux Linux: 82f9028e83944a9eee5229cbc6fee9be1de8a62d преди f9451d0fd5ba635dcabb49bfe456a6db734a8986; 946dec89c41726b94d31147ec528b96af0be1b5a преди 38e94d63e29f4a5c6eae87ee2c02101aaa321502; 82fe78065450d2d07f36a22e2b6b44955cf5ca5b преди fbeb65154583879d556ea94cb2f15888e9470f3d; 0c716703965ffc5ef4311b65cb5d84a703784717 преди c7fc9adf4e006155f7f2aeda052fbcde25cdcc49; 0c716703965ffc5ef4311b65cb5d84a703784717 преди e6b8463b7d791f3886d7584259d6e9f06a69f12e; 0c716703965ffc5ef4311b65cb5d84a703784717 преди 9e5ad06ea826322ce8c58b4a68442a96f600c3c4; 3e9d89f2ecd3636bd4cbdfd0b2dfdaf58f9882e2; 6.1.159 преди 6.1.178; 6.6.117 преди 6.6.145; 6.12.58 преди 6.12.97; 6.17.8 преди 6.18
- Linux Linux: 6.18; преди 6.18; 6.1.178 до 6.1.*; 6.6.145 до 6.6.*; 6.12.97 до 6.12.*; 6.18.40 до 6.18.*; 7.1.5 до 7.1.*; от 7.2 нататък
Siemens: още 3 продукта, добавени от Siemens
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP, SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
Вид слабост
История
- 27 юли 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-64552
- https://nvd.nist.gov/vuln/detail/CVE-2026-64552
- https://git.kernel.org/stable/c/f9451d0fd5ba635dcabb49bfe456a6db734a8986
- https://git.kernel.org/stable/c/38e94d63e29f4a5c6eae87ee2c02101aaa321502
- https://git.kernel.org/stable/c/fbeb65154583879d556ea94cb2f15888e9470f3d
- https://git.kernel.org/stable/c/c7fc9adf4e006155f7f2aeda052fbcde25cdcc49
- https://git.kernel.org/stable/c/e6b8463b7d791f3886d7584259d6e9f06a69f12e
- https://git.kernel.org/stable/c/9e5ad06ea826322ce8c58b4a68442a96f600c3c4
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html