Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: bpf, arm64: Fix trampoline for BPF_TRAMP_F_CALL_ORIG When BPF_TRAMP_F_CALL_ORIG is set, the trampoline calls __bpf_tramp_enter() and __bpf_tramp_exit() functions, passing them the struct bpf_tramp_image *im pointer as an argument in R0. The trampoline generation code uses emit_addr_mov_i64() to emit instructions for moving the bpf_tramp_image address into R0, but emit_addr_mov_i64() assumes the address to be in the vmalloc() space and uses only 48 bits. Because bpf_tramp_image is allocated using kzalloc(), its address can use more than 48-bits, in this case the trampoline will pass an invalid address to __bpf_tramp_enter/exit() causing a kernel crash. Fix this by using emit_a64_mov_i64() in place of emit_addr_mov_i64() as it can work with addresses that are greater than 48-bits.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected efc9909fdce00a827a37609628223cd45bf95d0b before 077149478497b2f00ff4fd9da2c892defa6418d8; affected efc9909fdce00a827a37609628223cd45bf95d0b before d9664e6ff040798a46cdc5d401064f55b8676c83; affected efc9909fdce00a827a37609628223cd45bf95d0b before 6d218fcc707d6b2c3616b6cd24b948fd4825cfec; affected efc9909fdce00a827a37609628223cd45bf95d0b before 19d3c179a37730caf600a97fed3794feac2b197b |
| Linux / Linux | affected 6.0; unaffected 0 before 6.0; unaffected 6.1.140 through 6.1.*; unaffected 6.6.92 through 6.6.*; unaffected 6.10.3 through 6.10.*; unaffected 6.11 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/077149478497b2f00ff4fd9da2c892defa6418d8
- https://git.kernel.org/stable/c/d9664e6ff040798a46cdc5d401064f55b8676c83
- https://git.kernel.org/stable/c/6d218fcc707d6b2c3616b6cd24b948fd4825cfec
- https://git.kernel.org/stable/c/19d3c179a37730caf600a97fed3794feac2b197b
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.