Vulnerabilidades em Linux

18.380 resultados
Análise Vexday

Com 12.630 CVEs catalogadas e 1.872 novas entradas nos últimos 90 dias, o Linux apresenta um volume de vulnerabilidades consistente com sua ampla base de código e adoção global. A taxa de exploração ativa — apenas 9 entradas no CISA KEV, representando 0,07% do total — está abaixo da média geral do catálogo (0,45%), o que sugere que, apesar da superfície de ataque extensa, a conversão de vulnerabilidades em ameaças ativas e confirmadas permanece relativamente contida. Ainda assim, a CVE-2026-31431 merece atenção prioritária: com EPSS de 0,9678, a probabilidade de exploração ativa é elevada, e seu status no KEV indica que esse risco já se concretizou. A falha mais comum — CWE-476 (desreferência de ponteiro nulo) — é representativa da complexidade inerente ao desenvolvimento em nível de kernel e reforça a necessidade de triagem contínua, especialmente diante das 23 vulnerabilidades com PoC pública disponível.

CVE-2019-11477HIGHInteger overflow in TCP_SKB_CB(skb)->tcp_gso_segsEPSS 98.7%CVE-2026-31431HIGHcrypto: algif_aead - Revert to operating out-of-placeEPSS 98.1%KEVCVE-2019-11478MEDIUMSACK can cause extensive memory use via fragmented resend queueEPSS 94.7%CVE-2026-43284HIGHxfrm: esp: avoid in-place decrypt on shared skb fragsEPSS 94.2%CVE-2026-43500HIGHrxrpc: Also unshare DATA/RESPONSE packets when paged frags are presentEPSS 94.1%CVE-2019-11479MEDIUMJonathan Looney discovered that the Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queEPSS 91.7%CVE-2018-5390—Linux kernel versions 4.9+ can be forced to make very expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for every incoming packet which can lead to a denial of serviceEPSS 71.8%CVE-2025-22037HIGHksmbd: fix null pointer dereference in alloc_preauth_hash()EPSS 68.8%CVE-2024-26594CRITICALksmbd: validate mech token in session setupEPSS 51.2%CVE-2025-21760HIGHndisc: extend RCU protection in ndisc_send_skb()EPSS 38.0%CVE-2018-5391—The Linux kernel, versions 3.9+, IP implementation is vulnerable to denial of service conditions with low rates of specially modified packetsEPSS 32.4%CVE-2023-52442CRITICALksmbd: validate session id and tree id in compound requestEPSS 29.6%CVE-2023-52755CRITICALksmbd: fix slab out of bounds write in smb_inherit_dacl()EPSS 28.1%CVE-2024-1086HIGHUse-after-free in Linux kernel's netfilter: nf_tables componentEPSS 28.1%KEVCVE-2021-3490HIGHLinux kernel eBPF bitwise ops ALU32 bounds trackingEPSS 27.4%CVE-2025-37924CRITICALksmbd: fix use-after-free in kerberos authenticationEPSS 24.5%CVE-2023-52440CRITICALksmbd: fix slub overflow in ksmbd_decode_ntlmssp_auth_blob()EPSS 22.3%CVE-2025-21758HIGHipv6: mcast: add RCU protection to mld_newpack()EPSS 16.9%CVE-2026-46300HIGHnet: skbuff: preserve shared-frag marker during coalescingEPSS 16.1%KEVCVE-2025-38562—ksmbd: fix null pointer dereference error in generate_encryptionkeyEPSS 13.0%