cve-2024-26871
Vulnerability from cvelistv5
Published
2024-04-17 10:27
Modified
2024-12-19 08:49
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix NULL pointer dereference in f2fs_submit_page_write() BUG: kernel NULL pointer dereference, address: 0000000000000014 RIP: 0010:f2fs_submit_page_write+0x6cf/0x780 [f2fs] Call Trace: <TASK> ? show_regs+0x6e/0x80 ? __die+0x29/0x70 ? page_fault_oops+0x154/0x4a0 ? prb_read_valid+0x20/0x30 ? __irq_work_queue_local+0x39/0xd0 ? irq_work_queue+0x36/0x70 ? do_user_addr_fault+0x314/0x6c0 ? exc_page_fault+0x7d/0x190 ? asm_exc_page_fault+0x2b/0x30 ? f2fs_submit_page_write+0x6cf/0x780 [f2fs] ? f2fs_submit_page_write+0x736/0x780 [f2fs] do_write_page+0x50/0x170 [f2fs] f2fs_outplace_write_data+0x61/0xb0 [f2fs] f2fs_do_write_data_page+0x3f8/0x660 [f2fs] f2fs_write_single_data_page+0x5bb/0x7a0 [f2fs] f2fs_write_cache_pages+0x3da/0xbe0 [f2fs] ... It is possible that other threads have added this fio to io->bio and submitted the io->bio before entering f2fs_submit_page_write(). At this point io->bio = NULL. If is_end_zone_blkaddr(sbi, fio->new_blkaddr) of this fio is true, then an NULL pointer dereference error occurs at bio_get(io->bio). The original code for determining zone end was after "out:", which would have missed some fio who is zone end. I've moved this code before "skip:" to make sure it's done for each fio.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4c122a32582b67bdd44ca8d25f894ee2dc54f566
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6d102382a11d5e6035f6c98f6e508a38541f7af3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8e2ea8b04cb8d976110c4568509e67d6a39b2889
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c2034ef6192a65a986a45c2aa2ed05824fdc0e9f
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4c122a32582b67bdd44ca8d25f894ee2dc54f566
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6d102382a11d5e6035f6c98f6e508a38541f7af3
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8e2ea8b04cb8d976110c4568509e67d6a39b2889
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c2034ef6192a65a986a45c2aa2ed05824fdc0e9f
Impacted products
Vendor Product Version
Linux Linux Version: 6.5
Show details on NVD website

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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26871\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-17T11:15:09.513\",\"lastModified\":\"2024-11-21T09:03:15.620\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nf2fs: fix NULL pointer dereference in f2fs_submit_page_write()\\n\\nBUG: kernel NULL pointer dereference, address: 0000000000000014\\nRIP: 0010:f2fs_submit_page_write+0x6cf/0x780 [f2fs]\\nCall Trace:\\n\u003cTASK\u003e\\n? show_regs+0x6e/0x80\\n? __die+0x29/0x70\\n? page_fault_oops+0x154/0x4a0\\n? prb_read_valid+0x20/0x30\\n? __irq_work_queue_local+0x39/0xd0\\n? irq_work_queue+0x36/0x70\\n? do_user_addr_fault+0x314/0x6c0\\n? exc_page_fault+0x7d/0x190\\n? asm_exc_page_fault+0x2b/0x30\\n? f2fs_submit_page_write+0x6cf/0x780 [f2fs]\\n? f2fs_submit_page_write+0x736/0x780 [f2fs]\\ndo_write_page+0x50/0x170 [f2fs]\\nf2fs_outplace_write_data+0x61/0xb0 [f2fs]\\nf2fs_do_write_data_page+0x3f8/0x660 [f2fs]\\nf2fs_write_single_data_page+0x5bb/0x7a0 [f2fs]\\nf2fs_write_cache_pages+0x3da/0xbe0 [f2fs]\\n...\\nIt is possible that other threads have added this fio to io-\u003ebio\\nand submitted the io-\u003ebio before entering f2fs_submit_page_write().\\nAt this point io-\u003ebio = NULL.\\nIf is_end_zone_blkaddr(sbi, fio-\u003enew_blkaddr) of this fio is true,\\nthen an NULL pointer dereference error occurs at bio_get(io-\u003ebio).\\nThe original code for determining zone end was after \\\"out:\\\",\\nwhich would have missed some fio who is zone end. I\u0027ve moved\\n this code before \\\"skip:\\\" to make sure it\u0027s done for each fio.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: f2fs: corrige la desreferencia del puntero NULL en f2fs_submit_page_write() ERROR: desreferencia del puntero NULL del kernel, direcci\u00f3n: 0000000000000014 RIP: 0010:f2fs_submit_page_write+0x6cf/0x780 [f2fs] Seguimiento de llamadas:  ? show_regs+0x6e/0x80? __morir+0x29/0x70 ? page_fault_oops+0x154/0x4a0? prb_read_valid+0x20/0x30? __irq_work_queue_local+0x39/0xd0 ? irq_work_queue+0x36/0x70? do_user_addr_fault+0x314/0x6c0? exc_page_fault+0x7d/0x190? asm_exc_page_fault+0x2b/0x30? f2fs_submit_page_write+0x6cf/0x780 [f2fs] ? f2fs_submit_page_write+0x736/0x780 [f2fs] do_write_page+0x50/0x170 [f2fs] f2fs_outplace_write_data+0x61/0xb0 [f2fs] f2fs_do_write_data_page+0x3f8/0x660 [f2fs] f2fs_write_single_data_page+0 x5bb/0x7a0 [f2fs] f2fs_write_cache_pages+0x3da/0xbe0 [f2fs] .. Es posible que otros hilos hayan agregado este fio a io-\u0026gt;bio y hayan enviado el io-\u0026gt;bio antes de ingresar a f2fs_submit_page_write(). En este punto io-\u0026gt;bio = NULL. Si is_end_zone_blkaddr(sbi, fio-\u0026gt;new_blkaddr) de este fio es verdadero, entonces se produce un error de desreferencia de puntero NULL en bio_get(io-\u0026gt;bio). El c\u00f3digo original para determinar el final de la zona estaba despu\u00e9s de \\\"out:\\\", lo que habr\u00eda pasado por alto a alg\u00fan fio que es el final de la zona. Mov\u00ed este c\u00f3digo antes de \\\"omitir:\\\" para asegurarme de que est\u00e9 hecho para cada fio.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/4c122a32582b67bdd44ca8d25f894ee2dc54f566\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6d102382a11d5e6035f6c98f6e508a38541f7af3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8e2ea8b04cb8d976110c4568509e67d6a39b2889\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c2034ef6192a65a986a45c2aa2ed05824fdc0e9f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4c122a32582b67bdd44ca8d25f894ee2dc54f566\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/6d102382a11d5e6035f6c98f6e508a38541f7af3\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/8e2ea8b04cb8d976110c4568509e67d6a39b2889\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/c2034ef6192a65a986a45c2aa2ed05824fdc0e9f\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


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