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Уязвимость функции tcpmss_mt() модуля net/netfilter/xt_tcpmss.c компонента netfilter ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость kernel-lt

Уязвимость kernel-lt

In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_tcpmss: check remaining length before reading optlen Quoting reporter: In net/netfilter/xt_tcpmss.c (lines 53-68), the TCP option parser reads op[i+1] directly without validating the remaining option length. If the last byte of the option field is not EOL/NOP (0/1), the code attempts to index op[i+1]. In the case where i + 1 == optlen, this causes an out-of-bounds read, accessing memory past the optlen boundary (either reading beyond the stack buffer _opt or the following payload).

In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_tcpmss: check remaining length before reading optlen Quoting reporter: In net/netfilter/xt_tcpmss.c (lines 53-68), the TCP option parser reads op[i+1] directly without validating the remaining option length. If the last byte of the option field is not EOL/NOP (0/1), the code attempts to index op[i+1]. In the case where i + 1 == optlen, this causes an out-of-bounds read, accessing memory past the optlen boundary (either reading beyond the stack buffer _opt or the following payload).

In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_tcpmss: check remaining length before reading optlen Quoting reporter: In net/netfilter/xt_tcpmss.c (lines 53-68), the TCP option parser reads op[i+1] directly without validating the remaining option length. If the last byte of the option field is not EOL/NOP (0/1), the code attempts to index op[i+1]. In the case where i + 1 == optlen, this causes an out-of-bounds read, accessing memory past the optlen boundary (either reading beyond the stack buffer _opt or the following payload).

In the Linux kernel, the following vulnerability has been resolved: n ...

In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_tcpmss: check remaining length before reading optlen Quoting reporter: In net/netfilter/xt_tcpmss.c (lines 53-68), the TCP option parser reads op[i+1] directly without validating the remaining option length. If the last byte of the option field is not EOL/NOP (0/1), the code attempts to index op[i+1]. In the case where i + 1 == optlen, this causes an out-of-bounds read, accessing memory past the optlen boundary (either reading beyond the stack buffer _opt or the following payload).

Security update for the Linux Kernel (Live Patch 78 for SUSE Linux Enterprise 12 SP5)

Security update for the Linux Kernel (Live Patch 74 for SUSE Linux Enterprise 12 SP5)

Security update for the Linux Kernel (Live Patch 82 for SUSE Linux Enterprise 12 SP5)

Security update for the Linux Kernel (Live Patch 69 for SUSE Linux Enterprise 12 SP5)

Security update for the Linux Kernel (Live Patch 80 for SUSE Linux Enterprise 12 SP5)

Security update for the Linux Kernel (Live Patch 70 for SUSE Linux Enterprise 12 SP5)

Security update for the Linux Kernel (Live Patch 71 for SUSE Linux Enterprise 12 SP5)

Security update for the Linux Kernel (Live Patch 72 for SUSE Linux Enterprise 12 SP5)

ALT-PU-2026-7465: package `kernel-image-rt` update to version 5.10.252-alt1.rt148

Security update for the Linux Kernel

ALT-PU-2026-4750: package `kernel-image-std-def` update to version 5.10.252-alt1

ALT-PU-2026-7309: package `kernel-image-pine` update to version 6.18.16-alt1