Description
In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix the crash issue for zero copy XDP_TX action There is a crash issue when running zero copy XDP_TX action, the crash log is shown below. [ 216.122464] Unable to handle kernel paging request at virtual address fffeffff80000000 [ 216.187524] Internal error: Oops: 0000000096000144 [#1] SMP [ 216.301694] Call trace: [ 216.304130] dcache_clean_poc+0x20/0x38 (P) [ 216.308308] __dma_sync_single_for_device+0x1bc/0x1e0 [ 216.313351] stmmac_xdp_xmit_xdpf+0x354/0x400 [ 216.317701] __stmmac_xdp_run_prog+0x164/0x368 [ 216.322139] stmmac_napi_poll_rxtx+0xba8/0xf00 [ 216.326576] __napi_poll+0x40/0x218 [ 216.408054] Kernel panic - not syncing: Oops: Fatal exception in interrupt For XDP_TX action, the xdp_buff is converted to xdp_frame by xdp_convert_buff_to_frame(). The memory type of the resulting xdp_frame depends on the memory type of the xdp_buff. For page pool based xdp_buff it produces xdp_frame with memory type MEM_TYPE_PAGE_POOL. For zero copy XSK pool based xdp_buff it produces xdp_frame with memory type MEM_TYPE_PAGE_ORDER0. However, stmmac_xdp_xmit_back() does not check the memory type and always uses the page pool type, this leads to invalid mappings and causes the crash. Therefore, check the xdp_buff memory type in stmmac_xdp_xmit_back() to fix this issue.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
bba2556efad66e7eaa56fece13f7708caa1187f8 to < 3f7823219407f2f18044c2b72366a48810c5c821affectedbba2556efad66e7eaa56fece13f7708caa1187f8 to < 4d0ceb7677e1c4616afb96abb4518f70b65abb0daffectedbba2556efad66e7eaa56fece13f7708caa1187f8 to < 45ee0462b88396a0bd1df1991f801c89994ea72baffectedbba2556efad66e7eaa56fece13f7708caa1187f8 to < 5e5988736a95b1de7f91b10ac2575454b70e4897affectedbba2556efad66e7eaa56fece13f7708caa1187f8 to < a48e232210009be50591fdea8ba7c07b0f566a13affected
Linux Linux
Default version status: affected
5.13affected0 to < 5.13unaffected6.1.160 to ≤ 6.1.*unaffected6.6.120 to ≤ 6.6.*unaffected6.12.64 to ≤ 6.12.*unaffected6.18.4 to ≤ 6.18.*unaffected6.19 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/3f7823219407f2f18044c2b72366a48810c5c821 ↗
- https://git.kernel.org/stable/c/4d0ceb7677e1c4616afb96abb4518f70b65abb0d ↗
- https://git.kernel.org/stable/c/45ee0462b88396a0bd1df1991f801c89994ea72b ↗
- https://git.kernel.org/stable/c/5e5988736a95b1de7f91b10ac2575454b70e4897 ↗
- https://git.kernel.org/stable/c/a48e232210009be50591fdea8ba7c07b0f566a13 ↗
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html ↗