CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2024-49979 – net: gso: fix tcp fraglist segmentation after pull from frag_list
https://notcve.org/view.php?id=CVE-2024-49979
In the Linux kernel, the following vulnerability has been resolved: net: gso: fix tcp fraglist segmentation after pull from frag_list Detect tcp gso fraglist skbs with corrupted geometry (see below) and pass these to skb_segment instead of skb_segment_list, as the first can segment them correctly. Valid SKB_GSO_FRAGLIST skbs - consist of two or more segments - the head_skb holds the protocol headers plus first gso_size - one or more frag_list skbs hold exactly one segment - all but the last must be gso_size Optional datapath hooks such as NAT and BPF (bpf_skb_pull_data) can modify these skbs, breaking these invariants. In extreme cases they pull all data into skb linear. For TCP, this causes a NULL ptr deref in __tcpv4_gso_segment_list_csum at tcp_hdr(seg->next). Detect invalid geometry due to pull, by checking head_skb size. Don't just drop, as this may blackhole a destination. Convert to be able to pass to regular skb_segment. Approach and description based on a patch by Willem de Bruijn. • https://git.kernel.org/stable/c/bee88cd5bd83d40b8aec4d6cb729378f707f6197 https://git.kernel.org/stable/c/3fdd8c83e83fa5e82f1b5585245c51e0355c9f46 https://git.kernel.org/stable/c/2d4a83a44428de45bfe9dccb0192a3711d1097e0 https://git.kernel.org/stable/c/17bd3bd82f9f79f3feba15476c2b2c95a9b11ff8 •
CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2024-49978 – gso: fix udp gso fraglist segmentation after pull from frag_list
https://notcve.org/view.php?id=CVE-2024-49978
In the Linux kernel, the following vulnerability has been resolved: gso: fix udp gso fraglist segmentation after pull from frag_list Detect gso fraglist skbs with corrupted geometry (see below) and pass these to skb_segment instead of skb_segment_list, as the first can segment them correctly. Valid SKB_GSO_FRAGLIST skbs - consist of two or more segments - the head_skb holds the protocol headers plus first gso_size - one or more frag_list skbs hold exactly one segment - all but the last must be gso_size Optional datapath hooks such as NAT and BPF (bpf_skb_pull_data) can modify these skbs, breaking these invariants. In extreme cases they pull all data into skb linear. For UDP, this causes a NULL ptr deref in __udpv4_gso_segment_list_csum at udp_hdr(seg->next)->dest. Detect invalid geometry due to pull, by checking head_skb size. Don't just drop, as this may blackhole a destination. Convert to be able to pass to regular skb_segment. • https://git.kernel.org/stable/c/9fd1ff5d2ac7181844735806b0a703c942365291 https://git.kernel.org/stable/c/080e6c9a3908de193a48f646c5ce1bfb15676ffc https://git.kernel.org/stable/c/af3122f5fdc0d00581d6e598a668df6bf54c9daa https://git.kernel.org/stable/c/33e28acf42ee863f332a958bfc2f1a284a3659df https://git.kernel.org/stable/c/3cd00d2e3655fad3bda96dc1ebf17b6495f86fea https://git.kernel.org/stable/c/a1e40ac5b5e9077fe1f7ae0eb88034db0f9ae1ab •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-49977 – net: stmmac: Fix zero-division error when disabling tc cbs
https://notcve.org/view.php?id=CVE-2024-49977
In the Linux kernel, the following vulnerability has been resolved: net: stmmac: Fix zero-division error when disabling tc cbs The commit b8c43360f6e4 ("net: stmmac: No need to calculate speed divider when offload is disabled") allows the "port_transmit_rate_kbps" to be set to a value of 0, which is then passed to the "div_s64" function when tc-cbs is disabled. This leads to a zero-division error. When tc-cbs is disabled, the idleslope, sendslope, and credit values the credit values are not required to be configured. Therefore, adding a return statement after setting the txQ mode to DCB when tc-cbs is disabled would prevent a zero-division error. • https://git.kernel.org/stable/c/b4bca4722fda928810d024350493990de39f1e40 https://git.kernel.org/stable/c/2145583e5995598f50d66f8710c86bb1e910ac46 https://git.kernel.org/stable/c/521d42a1c24d638241220d4b9fa7e7a0ed02b88e https://git.kernel.org/stable/c/a71b686418ee6bcb6d6365f7f6d838d9874d9c64 https://git.kernel.org/stable/c/b8c43360f6e424131fa81d3ba8792ad8ff25a09e https://git.kernel.org/stable/c/f01782804147a8c21f481b3342c83422c041d2c0 https://git.kernel.org/stable/c/e33fe25b1efe4f2e6a5858786dbc82ae4c44ed4c https://git.kernel.org/stable/c/b0da9504a528f05f97d926b4db74ff219 •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2024-49976 – tracing/timerlat: Drop interface_lock in stop_kthread()
https://notcve.org/view.php?id=CVE-2024-49976
In the Linux kernel, the following vulnerability has been resolved: tracing/timerlat: Drop interface_lock in stop_kthread() stop_kthread() is the offline callback for "trace/osnoise:online", since commit 5bfbcd1ee57b ("tracing/timerlat: Add interface_lock around clearing of kthread in stop_kthread()"), the following ABBA deadlock scenario is introduced: T1 | T2 [BP] | T3 [AP] osnoise_hotplug_workfn() | work_for_cpu_fn() | cpuhp_thread_fun() | _cpu_down() | osnoise_cpu_die() mutex_lock(&interface_lock) | | stop_kthread() | cpus_write_lock() | mutex_lock(&interface_lock) cpus_read_lock() | cpuhp_kick_ap() | As the interface_lock here in just for protecting the "kthread" field of the osn_var, use xchg() instead to fix this issue. Also use for_each_online_cpu() back in stop_per_cpu_kthreads() as it can take cpu_read_lock() again. • https://git.kernel.org/stable/c/b4fdabffae14cca2c80d99bd81f3f27239ac7f5e https://git.kernel.org/stable/c/4679272d5252720746fd9c5465352cbc5665f230 https://git.kernel.org/stable/c/5bfbcd1ee57b607fd29e4645c7f350dd385dd9ad https://git.kernel.org/stable/c/a4a05ceffe8fad68b45de38fe2311bda619e76e2 https://git.kernel.org/stable/c/09cb44cc3d3df7ade2cebc939d6257a2fa8afc7a https://git.kernel.org/stable/c/db8571a9a098086608c11a15856ff585789e67e8 https://git.kernel.org/stable/c/b484a02c9cedf8703eff8f0756f94618004bd165 •
CVSS: -EPSS: 0%CPEs: 7EXPL: 0CVE-2024-49975 – uprobes: fix kernel info leak via "[uprobes]" vma
https://notcve.org/view.php?id=CVE-2024-49975
In the Linux kernel, the following vulnerability has been resolved: uprobes: fix kernel info leak via "[uprobes]" vma xol_add_vma() maps the uninitialized page allocated by __create_xol_area() into userspace. On some architectures (x86) this memory is readable even without VM_READ, VM_EXEC results in the same pgprot_t as VM_EXEC|VM_READ, although this doesn't really matter, debugger can read this memory anyway. • https://git.kernel.org/stable/c/d4b3b6384f98f8692ad0209891ccdbc7e78bbefe https://git.kernel.org/stable/c/f561b48d633ac2e7d0d667020fc634a96ade33a0 https://git.kernel.org/stable/c/21cb47db1ec9765f91304763a24565ddc22d2492 https://git.kernel.org/stable/c/24141df5a8615790950deedd926a44ddf1dfd6d8 https://git.kernel.org/stable/c/5b981d8335e18aef7908a068529a3287258ff6d8 https://git.kernel.org/stable/c/2aa45f43709ba2082917bd2973d02687075b6eee https://git.kernel.org/stable/c/9634e8dc964a4adafa7e1535147abd7ec29441a6 https://git.kernel.org/stable/c/34820304cc2cd1804ee1f8f3504ec7781 •