cbcvebase.
CVE-2024-58237
published 2025-05-05

CVE-2024-58237: In the Linux kernel, the following vulnerability has been resolved: bpf: consider that tail calls invalidate packet pointers Tail-called programs could execute…

PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.16%
6.1th percentile
In the Linux kernel, the following vulnerability has been resolved: bpf: consider that tail calls invalidate packet pointers Tail-called programs could execute any of the helpers that invalidate packet pointers. Hence, conservatively assume that each tail call invalidates packet pointers. Making the change in bpf_helper_changes_pkt_data() automatically makes use of check_cfg() logic that computes 'changes_pkt_data' effect for global sub-programs, such that the following program could be rejected: int tail_call(struct __sk_buff *sk) { bpf_tail_call_static(sk, &jmp_table, 0); return 0; } SEC("tc") int not_safe(struct __sk_buff *sk) { int *p = (void *)(long)sk->data; ... make p valid ... tail_call(sk); *p = 42; /* this is unsafe */ ... } The tc_bpf2bpf.c:subprog_tc() needs change: mark it as a function that can invalidate packet pointers. Otherwise, it can't be freplaced with tailcall_freplace.c:entry_freplace() that does a tail call.

Affected

17 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.12.9-1 (forky)linux 6.12.9-1 (forky)
linuxlinux
linuxlinux>= 51c39bb1d5d105a02e29aa7960f0a395086e6342 < f1692ee23dcaaddc24ba407b269707ee5df1301ff1692ee23dcaaddc24ba407b269707ee5df1301f
linuxlinux>= 51c39bb1d5d105a02e29aa7960f0a395086e6342 < 1c2244437f9ad3dd91215f920401a14f2542dbfc1c2244437f9ad3dd91215f920401a14f2542dbfc
linuxlinux>= 51c39bb1d5d105a02e29aa7960f0a395086e6342 < 1a4607ffba35bf2a630aab299e34dd3f6e658d701a4607ffba35bf2a630aab299e34dd3f6e658d70
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel>= 0 < 6.12.9-16.12.9-1
linuxlinux_kernel>= 0 < 6.12.9-16.12.9-1
linuxlinux_kernel>= 0 < 6.8.0-60.636.8.0-60.63
linuxlinux_kernel>= 5.6 < 6.6.906.6.90
linuxlinux_kernel>= 6.7 < 6.12.96.12.9
msrcazl3_kernel_6.6.85.1-4_on_azure_linux_3.0
msrcazl3_kernel_6.6.92.2-1_on_azure_linux_3.0
msrccbl2_kernel_5.15.186.1-1_on_cbl_mariner_2.0
msrccbl2_kernel_5.15.200.1-1_on_cbl_mariner_2.0
msrccbl2_kernel_5.15.202.1-1_on_cbl_mariner_2.0

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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