Description
In the Linux kernel, the following vulnerability has been resolved: ARM: davinci: da850-evm: Avoid NULL pointer dereference With newer versions of GCC, there is a panic in da850_evm_config_emac() when booting multi_v5_defconfig in QEMU under the palmetto-bmc machine: Unable to handle kernel NULL pointer dereference at virtual address 00000020 pgd = (ptrval) [00000020] *pgd=00000000 Internal error: Oops: 5 [#1] PREEMPT ARM Modules linked in: CPU: 0 PID: 1 Comm: swapper Not tainted 5.15.0 #1 Hardware name: Generic DT based system PC is at da850_evm_config_emac+0x1c/0x120 LR is at do_one_initcall+0x50/0x1e0 The emac_pdata pointer in soc_info is NULL because davinci_soc_info only gets populated on davinci machines but da850_evm_config_emac() is called on all machines via device_initcall(). Move the rmii_en assignment below the machine check so that it is only dereferenced when running on a supported SoC.
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
bae105879f2f2404155da6f50b3636193d228a62 to < c06f476e5b74bcabb8c4a2fba55864a37e62843baffectedbae105879f2f2404155da6f50b3636193d228a62 to < a12b356d45cbb6e8a1b718d1436b3d6239a862f3affectedbae105879f2f2404155da6f50b3636193d228a62 to < c64e2ed5cc376e137e572babfd2edc38b2cfb61baffectedbae105879f2f2404155da6f50b3636193d228a62 to < 89931d4762572aaee6edbe5673d41f8082de110faffectedbae105879f2f2404155da6f50b3636193d228a62 to < 0a312ec66a03133d28570f07bc52749ccfef54daaffectedbae105879f2f2404155da6f50b3636193d228a62 to < 0940795c6834fbe7705acc5c3d4b2f7a5f67527aaffectedbae105879f2f2404155da6f50b3636193d228a62 to < c5628533a3ece64235d04fe11ec44d2be99e423daffectedbae105879f2f2404155da6f50b3636193d228a62 to < 83a1cde5c74bfb44b49cb2a940d044bb2380f4eaaffected
Linux Linux
Default version status: affected
2.6.33affected0 to < 2.6.33unaffected4.9.311 to ≤ 4.9.*unaffected4.14.276 to ≤ 4.14.*unaffected4.19.239 to ≤ 4.19.*unaffected5.4.190 to ≤ 5.4.*unaffected5.10.112 to ≤ 5.10.*unaffected5.15.35 to ≤ 5.15.*unaffected5.17.4 to ≤ 5.17.*unaffected5.18 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/c06f476e5b74bcabb8c4a2fba55864a37e62843b ↗
- https://git.kernel.org/stable/c/a12b356d45cbb6e8a1b718d1436b3d6239a862f3 ↗
- https://git.kernel.org/stable/c/c64e2ed5cc376e137e572babfd2edc38b2cfb61b ↗
- https://git.kernel.org/stable/c/89931d4762572aaee6edbe5673d41f8082de110f ↗
- https://git.kernel.org/stable/c/0a312ec66a03133d28570f07bc52749ccfef54da ↗
- https://git.kernel.org/stable/c/0940795c6834fbe7705acc5c3d4b2f7a5f67527a ↗
- https://git.kernel.org/stable/c/c5628533a3ece64235d04fe11ec44d2be99e423d ↗
- https://git.kernel.org/stable/c/83a1cde5c74bfb44b49cb2a940d044bb2380f4ea ↗