{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-35858","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-05-17T13:50:33.106Z","datePublished":"2024-05-17T14:47:33.401Z","dateUpdated":"2026-08-05T11:30:22.967Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T11:30:22.967Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bcmasp: fix memory leak when bringing down interface\n\nWhen bringing down the TX rings we flush the rings but forget to\nreclaimed the flushed packets. This leads to a memory leak since we\ndo not free the dma mapped buffers. This also leads to tx control\nblock corruption when bringing down the interface for power\nmanagement."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - The vulnerable code is the `bcmasp_netif_deinit()` teardown path of a platform Ethernet driver, reached only via `ndo_stop` (`ip link set down`) or a local PM suspend/resume cycle. No received packet or remote protocol interaction can drive interface teardown, so this requires local system access.\nAC:L - The triggering party controls both halves — flooding fragmented TX traffic guarantees in-flight descriptors at teardown, and the tiny `DESC_RING_COUNT` ring wraps into the stale `tx_cbs` region within milliseconds of resuming, so the premature `dev_consume_skb_any()` and subsequent double free are deterministic and repeatable. No unpredictable memory layout or victim state is required.\nPR:L - On the BRCMSTB set-top/embedded systems this driver targets, the suspend-to-WoL standby cycle that produces the `tx_cbs` corruption is an automatic system event, not an attacker privilege; an unprivileged local process only needs to be generating fragmented TX traffic when it occurs. Choosing the higher-severity option between low privilege and root, since the corruption path does not itself depend on CAP_NET_ADMIN.\nUI:N - Idle/autosleep standby entry and admin-scripted interface cycling (NetworkManager, DHCP renewal, WoL standby) occur with no victim action. The leak accrues on every interface-down with no interaction at all.\nS:U - The leaked memory, freed skbs, and corrupted slab freelist all live within the kernel's own security authority. There is no VM, IOMMU, or sandbox boundary crossed.\nC:H - The stale `last` flag frees an skb (releasing its fragment page references) while later descriptors for that same skb are still pending in the hardware ring and still DMA-mapped, so reallocated pages holding other processes' data can be DMA'd out onto the wire. The resulting `skbuff_head_cache` double free additionally yields overlapping allocations usable as a kernel read primitive.\nI:H - Freeing the same skb twice corrupts the SLUB freelist, allowing two live objects to alias the same memory — the standard route to a controlled kernel write and control-flow hijack. Skipped `dma_unmap_single()` also leaves the device with live mappings into memory that has been returned to the allocator.\nA:H - The double free trips SLUB's detection (BUG/panic) or silently corrupts the allocator into a later oops. Independently, the unreclaimed skbs and DMA mappings leak on every interface-down, exhausting memory and SWIOTLB/IOVA space over repeated up/down or standby cycles."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c"],"versions":[{"version":"490cb412007de593e07c1d3e2b1ec4233886707c","lessThan":"09040baf8779ad880e0e0d0ea10e57aa929ef3ab","status":"affected","versionType":"git"},{"version":"490cb412007de593e07c1d3e2b1ec4233886707c","lessThan":"2389ad1990163d29cba5480d693b4c2e31cc545c","status":"affected","versionType":"git"},{"version":"490cb412007de593e07c1d3e2b1ec4233886707c","lessThan":"9f898fc2c31fbf0ac5ecd289f528a716464cb005","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/net/ethernet/broadcom/asp2/bcmasp_intf.c"],"versions":[{"version":"6.6","status":"affected"},{"version":"0","lessThan":"6.6","status":"unaffected","versionType":"semver"},{"version":"6.6.30","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.8.9","lessThanOrEqual":"6.8.*","status":"unaffected","versionType":"semver"},{"version":"6.9","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":"6.6","versionEndExcluding":"6.6.30"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.8.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.9"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/09040baf8779ad880e0e0d0ea10e57aa929ef3ab"},{"url":"https://git.kernel.org/stable/c/2389ad1990163d29cba5480d693b4c2e31cc545c"},{"url":"https://git.kernel.org/stable/c/9f898fc2c31fbf0ac5ecd289f528a716464cb005"}],"title":"net: bcmasp: fix memory leak when bringing down interface","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T03:21:49.040Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/09040baf8779ad880e0e0d0ea10e57aa929ef3ab","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/2389ad1990163d29cba5480d693b4c2e31cc545c","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/9f898fc2c31fbf0ac5ecd289f528a716464cb005","tags":["x_transferred"]}]},{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-35858","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T15:41:37.023681Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-09-11T17:33:17.762Z"}}]}}