{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-48851","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-07-16T11:38:08.913Z","datePublished":"2024-07-16T12:25:18.488Z","dateUpdated":"2026-08-05T08:52:38.698Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T08:52:38.698Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: gdm724x: fix use after free in gdm_lte_rx()\n\nThe netif_rx_ni() function frees the skb so we can't dereference it to\nsave the skb->len."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL"},"scenarios":[{"lang":"en","value":"AV:N - gdm_lte_rx() is the RX completion path of the GDM724x LTE WWAN netdev; a remote peer that can deliver packets over the cellular/IP path causes the modem to submit LTE_RX_SDU bulk data, which flows USB RX → do_rx() → gdm_lte_receive_pkt() → gdm_lte_netif_rx() → gdm_lte_rx() on every received SDU—ordinary network traffic, not USB-descriptor framing.\nAC:L - Every successful receive that returns NET_RX_SUCCESS from netif_rx_ni() takes the else branch and dereferences skb->len after the skb has been consumed/freed by backlog softirq processing; the attacker only needs to deliver packets and needs no race or uncontrollable victim state.\nPR:N - Inbound LTE SDUs are processed with no host authentication, credentials, or capabilities; a remote network peer needs no OS account on the target.\nUI:N - Once the modem is attached and the lte*pdn* interfaces are up (typical always-on LTE/IoT deployment), packet delivery alone triggers the path with no mount, file-open, or other victim action.\nS:U - The use-after-free corrupts/uses host kernel skb/stats state within the same OS security authority and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - This is a use-after-free of the skb object after netif_rx_ni(); per scoring guidance a UAF enables heap reuse and arbitrary kernel memory disclosure (the freed skb->len read also feeds visible rx_bytes stats).\nI:H - Use-after-free of a slab skb is memory corruption that, under the higher-severity rule, is treated as enabling heap spray and write/control-flow hijack primitives in kernel context.\nA:H - Use-after-free of a consumed skb can oops/panic the kernel (and UAFs are scored A:H even when not fully exploited); a remote peer can retrigger it per received packet."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/gdm724x/gdm_lte.c"],"versions":[{"version":"61e121047645122c47714fcda684d0ee67f444af","lessThan":"6dc7b87c62423bfa68139fe95e85028aab584c9a","status":"affected","versionType":"git"},{"version":"61e121047645122c47714fcda684d0ee67f444af","lessThan":"83a9c886c2b5a0d28c0b37e1736b47f38d61332a","status":"affected","versionType":"git"},{"version":"61e121047645122c47714fcda684d0ee67f444af","lessThan":"48ecdf3e29a6e514e8196691589c7dfc6c4ac169","status":"affected","versionType":"git"},{"version":"61e121047645122c47714fcda684d0ee67f444af","lessThan":"403e3afe241b62401de1f8629c9c6b9b3d69dbff","status":"affected","versionType":"git"},{"version":"61e121047645122c47714fcda684d0ee67f444af","lessThan":"6d9700b445098dbbce0caff4b8cfca214cf1e757","status":"affected","versionType":"git"},{"version":"61e121047645122c47714fcda684d0ee67f444af","lessThan":"1fb9dd3787495b4deb0efe66c58306b65691a48f","status":"affected","versionType":"git"},{"version":"61e121047645122c47714fcda684d0ee67f444af","lessThan":"d39dc79513e99147b4c158a8a9e46743e23944f5","status":"affected","versionType":"git"},{"version":"61e121047645122c47714fcda684d0ee67f444af","lessThan":"fc7f750dc9d102c1ed7bbe4591f991e770c99033","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/gdm724x/gdm_lte.c"],"versions":[{"version":"3.12","status":"affected"},{"version":"0","lessThan":"3.12","status":"unaffected","versionType":"semver"},{"version":"4.9.307","lessThanOrEqual":"4.9.*","status":"unaffected","versionType":"semver"},{"version":"4.14.272","lessThanOrEqual":"4.14.*","status":"unaffected","versionType":"semver"},{"version":"4.19.235","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.185","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.106","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.29","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"5.16.15","lessThanOrEqual":"5.16.*","status":"unaffected","versionType":"semver"},{"version":"5.17","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"4.9.307"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"4.14.272"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"4.19.235"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"5.4.185"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"5.10.106"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"5.15.29"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"5.16.15"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"5.17"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/6dc7b87c62423bfa68139fe95e85028aab584c9a"},{"url":"https://git.kernel.org/stable/c/83a9c886c2b5a0d28c0b37e1736b47f38d61332a"},{"url":"https://git.kernel.org/stable/c/48ecdf3e29a6e514e8196691589c7dfc6c4ac169"},{"url":"https://git.kernel.org/stable/c/403e3afe241b62401de1f8629c9c6b9b3d69dbff"},{"url":"https://git.kernel.org/stable/c/6d9700b445098dbbce0caff4b8cfca214cf1e757"},{"url":"https://git.kernel.org/stable/c/1fb9dd3787495b4deb0efe66c58306b65691a48f"},{"url":"https://git.kernel.org/stable/c/d39dc79513e99147b4c158a8a9e46743e23944f5"},{"url":"https://git.kernel.org/stable/c/fc7f750dc9d102c1ed7bbe4591f991e770c99033"}],"title":"staging: 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