{"id":"CVE-2021-47095","state":"PUBLISHED","title":"ipmi: ssif: initialize ssif_info->client early","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipmi: ssif: initialize ssif_info->client early\n\nDuring probe ssif_info->client is dereferenced in error path. However,\nit is set when some of the error checking has already been done. This\ncauses following kernel crash if an error path is taken:\n\n[   30.645593][  T674] ipmi_ssif 0-000e: ipmi_ssif: Not probing, Interface already present\n[   30.657616][  T674] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000088\n...\n[   30.657723][  T674] pc : __dev_printk+0x28/0xa0\n[   30.657732][  T674] lr : _dev_err+0x7c/0xa0\n...\n[   30.657772][  T674] Call trace:\n[   30.657775][  T674]  __dev_printk+0x28/0xa0\n[   30.657778][  T674]  _dev_err+0x7c/0xa0\n[   30.657781][  T674]  ssif_probe+0x548/0x900 [ipmi_ssif 62ce4b08badc1458fd896206d9ef69a3c31f3d3e]\n[   30.657791][  T674]  i2c_device_probe+0x37c/0x3c0\n...\n\nInitialize ssif_info->client before any error path can be taken. Clear\ni2c_client data in the error path to prevent the dangling pointer from\nleaking.","publishedAt":"2024-03-04T18:10:46.553Z","updatedAt":"2026-05-11T13:47:56.919Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c","status":"affected","lessThan":"8efd6a3391f7b0b19fb0c38e50add06ca30c94af","versionType":"git"},{"version":"c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c","status":"affected","lessThan":"1f6ab847461ce7dd89ae9db2dd4658c993355d7c","versionType":"git"},{"version":"c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c","status":"affected","lessThan":"77a7311ca167aa5b7055c549a940a56e73ee5f29","versionType":"git"},{"version":"c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c","status":"affected","lessThan":"34f35f8f14bc406efc06ee4ff73202c6fd245d15","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/char/ipmi/ipmi_ssif.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.4","versionType":"semver"},{"version":"5.4.169","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.89","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.12","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/char/ipmi/ipmi_ssif.c"]}],"references":["https://git.kernel.org/stable/c/8efd6a3391f7b0b19fb0c38e50add06ca30c94af","https://git.kernel.org/stable/c/1f6ab847461ce7dd89ae9db2dd4658c993355d7c","https://git.kernel.org/stable/c/77a7311ca167aa5b7055c549a940a56e73ee5f29","https://git.kernel.org/stable/c/34f35f8f14bc406efc06ee4ff73202c6fd245d15"],"weaknesses":[],"ingestedAt":"2026-10-29T19:49:19.404Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/47xxx/CVE-2021-47095.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-47095","state":"PUBLISHED","datePublished":"2024-03-04T18:10:46.553Z","dateUpdated":"2026-05-11T13:47:56.919Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-02-29T22:33:44.300Z"},"containers":{"cna":{"title":"ipmi: ssif: initialize ssif_info->client early","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nipmi: ssif: initialize ssif_info->client early\n\nDuring probe ssif_info->client is dereferenced in error path. However,\nit is set when some of the error checking has already been done. This\ncauses following kernel crash if an error path is taken:\n\n[   30.645593][  T674] ipmi_ssif 0-000e: ipmi_ssif: Not probing, Interface already present\n[   30.657616][  T674] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000088\n...\n[   30.657723][  T674] pc : __dev_printk+0x28/0xa0\n[   30.657732][  T674] lr : _dev_err+0x7c/0xa0\n...\n[   30.657772][  T674] Call trace:\n[   30.657775][  T674]  __dev_printk+0x28/0xa0\n[   30.657778][  T674]  _dev_err+0x7c/0xa0\n[   30.657781][  T674]  ssif_probe+0x548/0x900 [ipmi_ssif 62ce4b08badc1458fd896206d9ef69a3c31f3d3e]\n[   30.657791][  T674]  i2c_device_probe+0x37c/0x3c0\n...\n\nInitialize ssif_info->client before any error path can be taken. Clear\ni2c_client data in the error path to prevent the dangling pointer from\nleaking."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c","status":"affected","lessThan":"8efd6a3391f7b0b19fb0c38e50add06ca30c94af","versionType":"git"},{"version":"c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c","status":"affected","lessThan":"1f6ab847461ce7dd89ae9db2dd4658c993355d7c","versionType":"git"},{"version":"c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c","status":"affected","lessThan":"77a7311ca167aa5b7055c549a940a56e73ee5f29","versionType":"git"},{"version":"c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c","status":"affected","lessThan":"34f35f8f14bc406efc06ee4ff73202c6fd245d15","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/char/ipmi/ipmi_ssif.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.4","versionType":"semver"},{"version":"5.4.169","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.89","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.12","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/char/ipmi/ipmi_ssif.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/8efd6a3391f7b0b19fb0c38e50add06ca30c94af"},{"url":"https://git.kernel.org/stable/c/1f6ab847461ce7dd89ae9db2dd4658c993355d7c"},{"url":"https://git.kernel.org/stable/c/77a7311ca167aa5b7055c549a940a56e73ee5f29"},{"url":"https://git.kernel.org/stable/c/34f35f8f14bc406efc06ee4ff73202c6fd245d15"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T13:47:56.919Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"5.4.169"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"5.10.89"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"5.15.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"5.16"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2021-47095","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-03-04T20:32:21.801460Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-07-05T17:22:07.482Z"}},{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/8efd6a3391f7b0b19fb0c38e50add06ca30c94af","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/1f6ab847461ce7dd89ae9db2dd4658c993355d7c","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/77a7311ca167aa5b7055c549a940a56e73ee5f29","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/34f35f8f14bc406efc06ee4ff73202c6fd245d15","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T05:24:39.950Z"}}]}}}